REVISION OF BAUHINIA SUBGENUS BAUHINIA SECTION AMARIA (CERCIDEAE: CAESALPINIOIDEAE: FABACEAE)

2006·14.8 MB·English

by  Richard P Wunderlin

REVISION OF BAUHINIA SUBGENUS
BAUHINIA
SECTION
AMARIA
(CERCIDEAE: CAESALPINIOIDEAE: FABACEAE)
RWunderlin
Richard
Deportment
of Biology
University of South Florida
Tampa USA
33620-5200
Florida
[email protected]
ABSTRACT
A I
taxonomic treatment of BatWi in subgenus Ban hi nia section Amaria presented. Fifteen species
jfl is
m
are recognized in series Decandrae and one species recognized series Stenanthac. Bauhinia
is
amatlana Wundcrlin from southern Mexico, Bauhinia arborea VVunderlni from Ecuador. Bauhinia
ayabacensis Wunderlin from Ecuador and Peru, and Bauhinia geniculata Wunderim from Colombia
are described and the combination Bauhinia petiolaia (DC.) Triana ex Hooker var caudigera
(S.E
f.
Wundcrlin
Blake) is proposed. Keys, descriptions, and distribution data are provided.
RESUMEN
Se presenta un tratamiento taxonomico de Bauhinia subgenero Bauhinia seccion Amaria.
Se
reconocen quince cspecies en la serie Decandrae y una en la serie Stenanthac. Se describen Bauhinia
Wunderim
amatlana del Sur de Mexico, Bauhinia arborea Wunderim de Ecuador, Bauhinia ayabacensis
Wunderlin de Ecuador Bauhinia Wunderim
y Peru, geniculata de Colombia, propone
y y se la
combinacion
Bauhinia Hooker
petiolaia (DC.) Triana ex var. caudigera (S.E Blake) Wunderlin. Se
f.
aportan
claves. descripciones, y datos sobre la distribucion.
The
pantropical genus Bauhinia with approxhnately 300
species consists of
four subgenera: Bauhinia, Piliostigma [^Elayunal Barklya, and Phancra
(Wunderhn
Bauhinia subgenus Wunderhn
et al 1987). Bauhinia, as defined by
et contains nine sections, of which three (Bauhinia, Pauletia, and Amaria)
al.,
New
World.
are
New
This is the first of several proposed taxonomic treatments of the World
species of Bauhinia. Previous regional treatments in the half-century such
last
(Wunderl
(Wunderlin western Mexico
1976),
(
(W
(Wunderim
Middle America
1998),
genus Vaz Vaz and
for Brazil 1979; Tozzi 2003) will be placed in the larger con
(
Wunderl
In the following revision, 16 species are recognized as comprising section
Amaria.
Decandrae and
Fifteen of these are in series one in series Stenanthae.
Series Triandrae, containing the single species Bauhinia pansamalana Donn.
A
Sm. and placed in section maria by Wunderlin here transferred
et (1987),
al. is
4
section Bauhinia and combined Remotae with
to in series pinhciroi
B.
SIDA22(1):97-122.2006
BRIT.ORG/SIDA 22(1)
98
Wunderlin with which shares the characters three stamens and the
ol fertile
it
and
same The pansamalana
pollen pollen sexine of striate-reticnlate
type. B. is
Amaria.
lacks the infratectal processes characteristic of section
Bauhinia section Amaria Mutis ex Caldas) Endl., Gen, 1318. 1840. Amavhi
Pi.
(S. S.
Mutis ex Caldas. Scmanario Nueva Granada 2:2^. 1810. TYPE: Amaria pctloJaia S. Mutis ex
DC. l^Baiihinia pctiolata Mutis ex DC.) Triana ex look, Lectotype designated by Brit-
(S.
I i J.
New
ton and Killip (Ann. York Aead. Sci. 36:lb4. 1936).
Trees or shrubs; branches lacking infrastipuUir spmes. Leaves unlobed, bi lobed,
termmal bud
or rarely bifoliokitc. Inllorescence or axiUary; floral ellipsoid to
Hypanthium
clavate. cupulate or turbinate to short-tubular; calyx spathaceous,
sometimes irregularly splitting into several lobes in late anthesis; petals
5,
subequal; stamens the inner 5 shorter than the outer or the inner 5
fertile 10,
5,
staminodial, the filaments connate at the base or free; pollen spheroidal,
tectum
inaperturate or 3-colporoidate, the reticulate or rarely striate-reticulate,
low continuous from
with blunt spine-like or rarely tectal processes the foot
gynophore
layer through the tectum (infratectal) or rarely supratectal; parti)
adnate the abaxial wall of the hypanthium; stigma oblique-capitate. Fruit
to
dehiscent.
KEY TO THE OE BAUHINIA AMARIA
SERIES SECTIC^N
Decandrae
Fertile stamens 10; petals spreading lies
1.
pseudotube
Fertile stamens petals strongly imbricate, the corolla forming a
1. 5;
Stenanthae
Series
&
Bauhinia Decandrae WunderUn, K.Larsen Skr 28T4.
series S.S.Larsen, Biol.
I.
198/. Type: Banhhiia pctiolata Mutis ex DC.) Triana ex look.
(S.
f.
1
KEY TO BAUHINIA DUCANDP^AE
SPECIES SERIES
IN
Leaves unlobed (rarely bilobate or bifoliolate in B. beguinotii).
Innermost pair of lateral nerves closer to the mid-nerve than to the adjacent
2.
beguinotii
nerves B.
lateral
2 Innermost pair of lateral nerves equidistant or closer to the adjacent lateral nerves
than the mid-nerve.
to
cm cm
21-27
Petals 3.5-4.5 long; fruit long B. petiolata
3.
cm cm
1-2 8-1
Petals longTruit 3 long.
3.
cm cm
Leaves 2-30 long, 6-1 3 wide;staminal sheath glabrous;gynoecium
4.
1
cm
tomentoseTruit 3.5-4 wide B.arborea
elliptic-oblong,
^
cm cm gynoecium
Leaves 7-1 long, 3-5,5 wide; staminal sheath pilose;
4.
1
cm
wide B.brachycalyx
glabrous or glandular; fruit linear, 1.5-2.5
unlobed
Leaves bilobate (rarely bifoliolate or in beguinotii).
1. B.
Leaves with the innermost pair of lateral nerves closer to the mid-nerve than to
5.
the adjacent nerves beguinotii
lateral B.
Leaves with the innermost pair of lateral nerves equidistant or closer to the ad-
5.
jacent nerves than to the mid-nerve.
lateral
Calyx prominently 5-winged B.geniculata
6.
winged winged
Calyx not or only very slightly (B.amatiana)
6.
WUNDERLIN,
REVISION OF BAUHINIA SUBGENUS BAUHINIA SECTION AMARIA
99
Ovary glabrous
or glabrate.
7.
Corolla yellow; flowers in fasciculate clusters,often appearing before
8.
the leaves; Mexico to Costa Rica cookii
B,
8. Corolla other than yellow; flowers in racemes or panicles, appearing
well after the leaves; Ecuador or Peru.
cm
Leaves 1-4 long, bilobed to ca.3/4 the blade length; 4-5
9. fruit
cm
long; Peru B.weberbaueri
cm
9. Leaves 5- 13 long, bilobed to ca. 1/2 the blade length; fruit 15-
cm
25 long; Ecuador.
10. Corolla white; staminal sheath ca. 1/8 the stamen length
seminarioi
B.
10. Corolla red; staminal sheath 3/5 the stamen length haughtii
B.
Ovary tomentose
or pilose.
7.
11. Corolla pin^rose, or while with red or pink at the base.
cm cm
12. Leaves ovate,4-10 long, 4-7.5 wide;corolla white with
red or pink the base;Colombia and Panama
at B.picta
12. Leaves suborbicular, 3-4 cm long, 3-4 cm wide; corolla deep
pink or rose; Ecuador and Peru ayabacensis
B.
Corolla white.
1.
1
13. Inflorescence and the lower surface of the leaves brov^n-
tomentose
B.seleriana
and
13. Inflorescence the lower surface of the leaves other than
brown-tomentose.
cm cm
14. Leaf blade 3.5-5.5 long; petals 2-2.7 long; Peru
augusti
B.
cm cm
14. Leaf blade 0.8-3 long; petals ca. long; Mexico.
1
cm
15. Leaf blade 2-3 long, bilobed to 1/2 the length
B.andrieuxii
cm
5. Leaf blade 0.8-1 .5 long, bilobed nearly to the base
1
B.amatlana
Bauhinia amatlana Wunderlin,
1. sp. nov. (Fig. l). Typh: MEXICO. Oaxaca; km
ca. 1.5
NE
of San Cristobal Amatlan,ca.80kmSof Oaxaca and 20 km E of (San Andres) Miahuatlan
(ca. 16^19.6H 96°22'W), ca. 1,500 m, 8 Jun 2000, Santiago K4ariincz (iiolotype: USE;
s.n.
J.
BRIX MO,
ISOTYPF^S: NY).
F,
A
Bauhinia andricuxii HemsLcy minoribus
foliis bilobis propc basin diffcrt.
Shrub; branches brown-toincntosc when young, soon glabrate. Leaves with the
bkide chartaceous, 5-7-nervcd, brcxidly suborbicular, broader than
long, bilo-
cm cm
bate nearly to the base, 0.8-1.5 long, 1.2-2.2 wide, the ninermost pan' of
lateral nerves equidistant or closer to the adjacent lateral nerves than to the
mid-ncrve, the base truncate to slightly cordate, the apex of the lobes rounded,
upper
the surface glabrous, the lower surface sparsely subappressed, short-pu-
mm
4-6
bescent, the petiole long, brown-tomentose;
stipules ovate-lanceolate,
mm
ca. long, caducous; adpctiolar intrastipular excrescence enlarged, form-
1
mm
ing a flattened subulate projection long, the others minute.
ca. Inflores-
1
cence
terminal, 1- to 3~flowx^red, the peduncle or rachis strigose; floral bud hn-
mm
10-12
ear-lanceolate, long, strigose, the apex usually with free calyx lobes
BRIT.ORG/SIDA
22(1)
100
UNIVERSITY OF
SOUTH FLORIDA
HnnRARIUM
PLANTS OF MEXICO
HULOn
!!
fiiJlilllllhl illiunhlllU ^^ (l!Hi\."l lir
(*A,\A( A <",t S km ST utS.Lii ('l!^lub.ll VtiiLitLiii. tM
I
SO km S Ojxava lU km
ol aiKl tiltS.ui An.irC'il
1
Muluuiian
(CI l("> I'J i-'N. •Jr.'::A\i. i.-,t l.'iftnm
•< ,liiiic 2(KH"i
JvNiK Satiita^o M.IIIIIH.V
s II
UNIVERSITY OF SOUTH FLORIDA
HERBARIUM
hQA.Bauhiniaamatlano
(holotype, USF).
WUNDERLIN, REVISION OF BAUHINIA SUBGENUS BAUHINIA SECTION AMARIA
101
mm
mm
to 0.5 long, sometiincs slightly winged and contorted, the pedicel 5-7
mm
and Hypanthium
long; bract bracteoles lanceolate, 0.5 long. turbinate,
ca.
mm
mm
1-1.5 long; calyx spathaceous at anthesis; petals white, 10-12 long,
mm
slightly spreading, short-clawed, glabrous, the blade broadly 5-6
elliptic,
mm
margin
wide, the entire or slightly crisped, the claw 1-2 long;
fertile sta-
mm
mens
7-8
10, the outer five long, the inner ones slightly shorter, the fila-
ments
short-connate at the base, forming a staminal sheath with laciniate pro-
mm
jections extending 1-2 above the sheath, the sheath short-pilose on the inner
surface, glabrous or glabrate on the outer, the anthers linear-oblong, 1-2 long,
mm
sparsely pilose; gynoecium 5-7 long, the gynophore, ovary, and
style
subequal, brown-tometitose. Fruit not seen.
MEXICO. km NE km
PARATYPr. Oaxaca: ca. 1.5 of San Cristobal Amatlan, ca. 80 S of Oaxncn and 20
km
H of (San Andres) Miahuatlan (ca. 16n9.6'N, 96^22'WO, ca. 1,500 m, 29 Aug Santiago
1995J.
Martffiez
s.n.(tJSF).
Etymology— The name name
derived from the Spanish of the village San
is
Cristobal Amatlan, this in turn derived from Amatla, the Aztec name for the
make
place of the tree (,Ficus sp.) from which the bark used to paper
is
Known
Distrihution and ecology.— Mexico (Oaxaca). only from the type
Deciduous thorn scrub m.
locality. at ca. 1,500
Bauhinia amatlana closely related to andrieuxn, also of Oaxaca, but
is B.
cm
differs by leaf blade 0.8-1.5 long and bilobed nearly the base 2-3
its to (vs.
cm
and
long divided only middle
to the in B.andricuxii).
Hemsley
Bauhinia andrieuxii Diagn. Nov. Mexic. Cent.-Amer,
2. Pi. 48. 1880; Biol.
Bot. 1:336. 1880. Typh: MEXICO. Oaxaca; near Oaxacajul 1834 G.Andrieux
(fll 4JJ lO-
(l
MO.
LOTYPE: K; ISOTYPI3S: F-fragmcnt, G, K, photo ex G: R US).
P;
when
Shrub or small branches tomentose young, soon glabrate. Leaves with
tree;
the blade chartaceous, 7-9-nerved, suborbicular or broader than long, bilobate
cm
cm
2-3
to 1/2 the length, long, 2.5-3 wide, the innermost pair of lateral nerves
equidistant or closer to the adjacent lateral nerves than to the mid-nerve, the
base cordate to rounded, the apex of the lobes rounded, the upper surface gla-
mm
brous, the lower surface tomentellous, the petiole 5-15 long, tomentellous;
mm
stipules ovate, long, caducous; adpetiolar intrastipular excrescence
ca. 1
mm
forming
enlarged, a subulate projection ca. long, the others minute. Inflo-
1
rescence terminal, racemose, 3- to 8-f lowered, the rachis strigose to tomentellous;
mm
bud
floral linear-lanceolate, 12-18 long, strigose, the apex with free calyx
mm mm
and
lobes ca. 1.5 long, the pedicel ca. 5 long; bract bracteoles lanceolate,
mm mm
Hypanthium 2-3
ca. 1.5 long. cupulate, long; calyx spathaceous at an-
cm
thesis; petals white, ca. 1 long, slightly spreading, subsessile, glabrous, the
mm
4-6
blade broadly wide, the apex rounded, the margin
elliptic, entire; fer-
mm
cm
tile stamens 10, the outer five ca. 1 long, the inner ones ca. 5 long, the
mm,
filaments unequally connate near the base 1-3 glabrous, the anthers
for
102 BRIT.ORG/SIDA 22(1)
mm
mm
linear-oblong, ca. 2 long on the longer stamens, ca. L5 long on the
cm
shorter ones, glabrous; gynoecium ca. long, the gynophore, ovary, and style
1
cm cm
subequal, tomentose. Fruit linear, 8-10 long, ca. h5 wide, apiculate with
mm
the persistent dark brown, tomentose, the gynophofc 5-10 long; seeds
style,
not seen.
Distribution and ecology —Western Mexico (Morclos,Oaxaca, and Smaloa).
Deciduous thorn scrub at elevations (rom near sea level to ca. 1,700 m.
Bauhinia andricuxii is closely related to B. amatlana, also ot Oaxaca, but
cm cm
2-3
differs by its leaf bUide long, bilobed to the middle (vs. 0.8-1.5 long,
bilobed nearly to the base in B.amalJana).
km
Specimens examined. MLXICO. Morclos: Canoti de Lobos, 14 on Cuernavaca-Yautepcc road,
Fryxcll 764 (MrXU); Canon de robos, Vazquez /776 (MEXU). Oaxaca: withont precise
locality,
&
Andrieux37l (G, P); Monte Alban, i^osc Hniigh 4590: Mitla, Smlf!) 107 (US); ruins at Monie A ban,
I
&
km
Sousa ct aJ. 6077 (K, MliXU, MO, WIS); 3 NI: La Ollaga. IcUcz Mn^allaucs 233 (lO. Sinaloa:
ol"
Cerro klano Rcdondo, \V Camiancro, Gentry 7018 (NY).
of
Bauhinia arborea Wunderlin,sp. ECUADOR.
3. no\'. (Fig. 2). Typh: NAPO:Anangu,Parc[uc
m^Ond)-2i}un]QS2
NAc\ona\ 260-350
\\\sunl
[ill
S!^^^^
(holot AAU; AAU,
NY).
vrr: isotypi-s:
A Bauhinia braihycalyx Ducke ioliis majoribus, (ructibus latioribus, staminuni vagina glabra, ncc
non gynoccio lonicntoso
diffcrt.
Tree to 30 m; branches glabrous. Leaves with the blade coriaceous, (3-)5-7-
cm cm
nerved, elliptic-obiong, unlobed, 12-30 long, 6-13 wide, the innermost
pair of lateral nerves equidistant or closer to the adjacent lateral nerves than to
the mid-nerve, the base rounded to obtuse, the apex abruptly short-caudate,
the upper surface glabrous, the lower surface minutely shghtly
strigulose,
igliter
1
cm
in color than upper surface, the petiole 2-4.5 long, glabrous; stipules
tlic
mm
broadly lanceolate, long, caducous; adpetiolar intrastipular excres-
ca.
1
mm
cence enlarged, forming a laterally flattened, obtuse projection to long,
1
the others minute. Inflorescence subterminal, short-racemose, 10- 18Tlow-
to
bud
cred, the flowers usually paired, the rachis strigose; floral elliptic-lanceolate,
mm
cm
1.5-2 long, strigose^ the apex acute, the pedicel 1-3 long; bract and
mm
Hypanthium
bracteolestriangular-ovate,ca.lmm 7-10
long. short-tubular,
mm
long; calyx spathaceous at anthesis; petals white, 12-15 long, slightly
mm
spreading, sessile, glabrous, the blade oblanceolatc, 5-7 wide, the apex ob-
mm
tuse, the margin slightly crisped; fertile stamens 10, the outer fi\^e 12-14
long, the inner ones slightly shorter, the filaments free to the base or very short-
mm
4-6
connate, the anthers lanceolate, long, sparsely short-pilose on the dor-
mm
mm
sal surface; gynoecium ca. 8 long, the gynophore and style ca. 2 long,
mm
cm
tomentose, the ovary ca. 5 long, tomentose. Fruit elliptic-oblong, 13
ca.
cm
3-4
long, wide, apiculate with the persistent style base, brown, glabrous,
gynophore 5-8
the cni long; seeds not seen.
WUNDERLIN, REVISION OF BAUHINIA SUBGENUS BAUHINIA SECTION AMARIA
103
STUDIES OF ECUADOREAN FORESTS
^^^^nwr^'^— -"
J -r,™.rr>n.CLD-vWK*««i^.^^«,*,n,,„„„„^^^^^,,^,
seF 8935
IJo,
Prov. HAPO:
AfWngu* Rain forest On well drained hilly ground
ir^
the Pa^rquu tiacional Yaaurvl. Soil teciperature 2iJ-£5*C-
Alt. 250-350 (76''23'W 0'31-32'S) Hay 3D ^ June 21,
la-
DSK 13 en, Stees reddlsh-brovr:. Slash yellow-brown.
Bark fiEsur-ed longitudinally.
ISonTE
eoTANXAU
Saiihinia arborea VSmclfrlin
^ARDE^^
"X
1
t985
f\ij,2.Bauhiniaarborea(\soiype,H\].
104 BRIT.ORG/5IDA 22(1)
km N
PARATvrES. ECUADOR. Morona-Saniiugo: 15 Taisha (02°32'S, 77°43'\\'J, Ortega 96 (USFj.Napo:
ol"
Rcscrva Etnica luaorani, highway and pipeline "Maxus^' under consiruciion (OO^Sl'S, 76°26'W),
1
&
Daymi
Aulcsi Audi 938 (MO, USF); Parque Naelonal Vasuni, trail tciward Rio (00°52'S. 76°5'\V),
la
NNW
Cewu 337/ (N40. USF),ca. 30 kni of Coca, Rio lIuashiLo,i\'fniing[()^i JJ592(K); Anangu, Parque
NacionalYasu^U\Xr31-32S76°23^V),S^:^^SV62{ A AU),5[^^9S34(AAU), SS6
51:1"
(AAU), 5EF 10235 {A Sucumbios; Lago Agrio Canton, RcservaCnyaheno, Tarapoa-Tipischa, Rio
A\J).
Cuyabeno crossing 176°13'W, OOnXTS), FaUhios al 8917 {USFl
ci
name
Elynnology—Jhc derived Irom the tree habit remarkable for size
is its
within section Amar'ui in Ecuador.
Distnhulion and Eastern Ecuador (Napo, Morona^Santiago, and
ecol()g_y—
Sucumloios). Rain forest on well-drantcd hilly ground at 250-450 m.
The most hrachyailyx but by having
species closely related to differs
is B.
larger leaves, wider fruits, a glabrous staminal sheath, and a tomentose gyno-
m
ecium. Bauhinui arhorca 30 while hrachycalyx shrub or
is a tree to B. is a
small tree to 6 m, rarely to 15 m.
Bauhinia augusti Harms, Repert. Spec. Nov. Regni Veg. 18:234. 1922.
4. ['i::PFRU.
T-.
Cajamarca: near ihe coni'Iuencc of Rio Chinchipe and Rio Maranon, 700-800 May
ilie ni, 1
1912 A. Wchcrhaiier 6224 (lf-CTO'I F here designated ro replace destroyed B holotypc:
(['!), viM::
iSOi.rcTOTYl'iiS: F-tragrneiu,G,NY, US; photo ex F MO, NY, US),
B;
when
Slirub 2 m;loranches pubescent young, soon becomingglabrate. Leaves
to
with the blade chartaceous, 7-9-nerved, broadly ovate, bilobed to ca. 1/2 the
cm cm
3-5
length, 3.5-5.5 long, wide, the innerniost pair of lateral nerves equi-
distant or closer to adjacent lateral nerves than to the mid-uerve, the base
tlic
cordate, the apex of the lobes obtuse, the upper surface glabrous, the lower sur-
cm
on
face short-pilose, especially the nerves, the petiole 0.5-1.5 long, short-
mm
stipules triangular-lanceolate, long, caducous; adpetiohir
pilose; ca. 1.5
intrastipular excrescence occasionally enlarged, forming a subulate projection
mm
and
to 2 long, the others minute. Inflorescence terminal or subtcrminal
axillary, short-racemose or paniculate, 4- to 12-f lowered, the rachis densely
cm
short-pilose; floral bud narrowly ellipsoid, slightly arcuate, 2-2.5 long, short-
cm
pilose, the apex obtuse or acute. tlie pedicel 0.5-1 long; bract and bracteoles
mm mm
Mypanthium 4-6
triangular-lanceolate, long. short- tubular, long;
ca. 1
cm
calyx spathaceous anthesis; petals 2-2.7 long, slightly spreading,
at vvliite,
cm
narrowly
short-claw^ed, glabrous, the blade elliptic-oblanceolate, 0.5-0.7
mm
3-4
wide, the apex obtuse, the margin slightly crisped, the claw long;
Icr-
cm
tile stamens 10, the outer fi\T 3-3.5 long, the inner ones slightly shorter, the
filaments short-connate at the base, sparsely pilose, especially toward the base,
mm
cm
gynoecium
the anthers elliptic-oblong, long, glabrous; 3-3.5 long,
ca. 5
the gynophore, ovary, and style snbequal, the ovary densely short-pilose, the
and gynophore Emit
style the sparsely pilose. not seen.
and ecology— Vcnx (Cajamarca). KnowMi only from the type
DisiJ'ibution
700-800
At m.
collection.
WUNDERLIN, REVISION OF BAUHINIA SUBGENUS BAUHINIA SECTION AMARIA
105
Bauhinia new
augusti is related to the species B. ayahacensis of Ecuador
and Bauhinia
Peru. augusti differs by its white corolla and lower leaf surface
with erect trichomes in contrast to the pink corolla and lower leaf surface with
appressed trichomes
of ayahacensis.
B.
Bauhinia ayahacensis Wunderlm, PERU
5. sp. nov. (Fig. 3). Tvpr: Piura: on road
to
km
Ayabaca, 18 above Puente Tandopa (Rio Quiroz), 1,700 24 Sep 1964 Hutchinson
in, (il), P.C.
&].K Wnghl
66S9 (ilOLOTvrr: F; isotypes; K, MO. NY, R US).
A
Bauhinia auguiti tiarms corolla rosea lata, foliorurn lamina inferiori tnchomatibus brevibus
adpressis obsita
diifert.
Shrub when
or small tree to 4 m; branches pubescent young, soon becoming
glabrate. Leaves with the blade chartaccous, 7(-9)-nerved. suborbicular, bilobed
cm cm
3-4 3-4
to ca. 1/3 the length, long, wide, the innermost
pair of lateral
nerves equidistant or closer to the adjacent lateral nerves than to the mid-nerve,
the base cordate, the apex of the lobes obtuse to rounded, the upper surface
glabrous, the lower surface appressed short-puberulent, on
especially the nerves,
mm
cm
the petiole 1-1.5 long, pubescent; stipules triangular-lanceolate,
ca. 1.5
long, caducous; adpetiolar intrastipular excrescence occasionally enlarged,
mm
forming
subulate
a projection to 2 long, the others minute. Inflorescence
terminal subterminal and
or short-racemose, 2-
axillary, to 10-flowered, the
rachis brown-tomentose; bud narrowly
floral ellipsoid, slightly arcuate, 2-2.5
mm
cm
long, brown-tomentose, the apex acute, the pedicel 6-8 long; bract and
mm
Hypanthium 4-
bracteoles triangular-lanceolate,
ca. long. short-tubular,
1
mm
cm
6 long; calyx spathaceous at anthesis; petals deep pink or rose, 2.5-3
long, spreading, short-clawed, glabrous, the blade narrowly 1-
elliptic-obovate,
mm
cm
1.5 wide, the apex apiculatc, the margins slightly crisped, the claw 3-4
stamens cm cm
long; fertile 10, the outer five 2-2.5 long, the inner ones 1-2 long,
the filaments short-connate at the base, sparsely pilose, the anthers elliptic-
mm
cm
oblong, ca. 5 long, glabrous; gynoecium 2-2.5 long, the gynophorc, ovary,
and style subequal, the gynophore and ovary tomentose,
the style sparsely pi-
cm cm
Fruit
lose. linear-^elliptic, ca. 6 long, ca. 1.7 wide, apiculate with the per-
brown, cm
sistent style base, strigose to glabrate, the gynophore long; seeds
ca. 1
mm
cm
ovate-remform, 7-8
ca. 1 long, wide, the surface dark brown, dull, the
mm
funicular aril-lobe scars unec[ual, 1-3 long.
ECUADOR. km &
Paratyphs. Loja: 5 U ol CeUca on road to El Empalme, Hading Andcrsson 1SJ83 (GB,
&
km
MO); El Empalme-Celica road, ca. 5 above El Empalme, HarJing Andcrsson 18221(MO). PERU.
&
Cajainarca: on the crossing to San Luis, CahaniUas Guevara 509 (F); El Camote, Carretera Chilcte-
&
Contumaza, Sagdsicgui Lopez 7636 MO, USE), between Rupe and Contumaza,
Sagdsicgui al
(I; et
95/7 (MO); near San Pablo, Sagdstegui al 15380 Caserio de Sanchez 200 between
ci (F); Chilili, (FJ;
Chilcte and Rupe. F of the Chilete-Contumaza highway, Sanchez 1222
(F).
Etymology— The name
from town
derived the of Ayabaca (Province Ayabaca)
near the type locality
106 BRIT.ORG/SI0A 22(1)
^
UNIVlunT Of CAUfOCXlA
?«vrufh HfHi-nkcl Girdro Hip^liijoo itxlw Andrs, 1963- lfl<^
DirPttcjf, Pml C HutcSiion
Addiriofv*! rkW Gorcf Tor 6689 Troe k m. tall
:
and 3 n» in diametor. Flowers deep pink.
Irvln, 1966, commentti ''type fleacription
gives colOir aS White."
,
PtRU
aMgusU
Bauhliila Harms
Bauhinia
ayabacensis Wund^Mlin Dry oyxn hjlJmJcs, *c*ttcrcJ brush. On rojiJ to Ayibaca,
1641230 iS km. iKjvc Piicntc T*ndopiL (Rjo Quiroxj.
Altimdc 1700 m.
I9ii2
ProTincp of Ajrab»c», IX-pannicftl of Piur*
MUSEUM
FIELD OF C Hutchison
t'AUL
y^/j^Q
NATURAL HISTORY
DiKTHE^uTTO KY i«t I luLB^rruu nr TitT Uhiiv)ciL>inrr or CA-uronnu
MICH, M, P. L£,
Bauhinia ayobacensis (holotype,
Fig. 3. F),