A New Xeromorphic Species of Clusia (Clusiaceae) from Dry Valleys of Northern Peru

2010·3.1 MB·English

by  Mats H G Gustafsson

A New Xeromorphic Species of Clusia (Clusiaceae) from Dry Valleys of
Northern Peru
Mats H. G. Gustafsson
Ecoinformatics and Biodiversity, Department of Biological Sciences, Aarhus University, Ole
Worms Alle, Building 1137, 8000 Arhus C, Denmark, [email protected]
Abstract. Clusia magnoliiflora M. H. G. Gust, is when dried) on adaxial surfaces, occasionally
described as new for the Clusiaceae. It grows in dry branched or anastomosing; angles very steep. Inflo¬
rescences of staminate plants 3- to 5-flowered, of
tributaries in northern Peru, a kind of habitat that pistillate plants 3-flowered; flowers to 9 cm diam.,
harbors very few Clusia species. The species is fragrant; bracteoles in 4 pairs, thick, decussate; sepals
distinct on account of its extremely thick, obovate 5, orbicular, 12-16 mm, somewhat petaloid; petals 7
leaves; the large, white flowers with as many as seven or 8, white, spatulate, concave, 26-38 X 17-25 mm,
or eight spatulate petals; the large, white, triangular caducous in fruit; staminate flowers with a white,
stigmata in the flower; and the spherical fruit with the
covered with yellow resin at anthesis; anthers ca. 80 to
magnoliiflora is abundant in the habitat where it 120, sessile, mostly dithecal, 1.5-2.5 X 1.5-2.5 mm,
was collected. opening with 2 longitudinal slits; stigmata 9, white,
Key words: Clusia, Clusiaceae, IUCN Red List, irregularly triangular, 4-5 X 4-5 mm, peltate, on
styles < 1 mm long; staminodial ring whitish, 1.5-
3 mm tall, crowned by 12 to 16 resiniferous
The Neotropical genus Clusia L. (Clusiaceae) antherodes, ca. 1 X 2-3 mm. Fruit globular (immature
fruit measured at 25 mm) with black, peltate, widely
trees and shrubs. Most species are either hemiepi- spaced stigmata, positioned well below the apex;
phytes in lowland rainforests or terrestrial trees or
sinh ruabrsid i n awreeat sm. oAnt andeis ftionrcetsitvse, wshpileec ioensl y ian fetwhe o clcausrt occDuirsst riinbu ltaiorgne paonpdu lahtaiobnitsa ti.n pCarltuss ioaf thmea gCnhoilnicifhloiprae
here described as new. rviavlelery v,a wllehye raen idt ginro wadsj ainc ednrty psacrrtusb o af tt hbee tMweaerann 5o0n0 r iavnedr
1200 m altitude (Fig. 2E, F). Other elements in this
Clusia magnoliiflora M. H. G. Gust., sp. nov. TYPE: vegetation include cacti, such as species of Melocac-
Peru. Amazonas: Maranon valley, on rd. to Lonya tus Link & Otto, and shrubs, such as Croton L.
Grande 35 km from main rd. Bagua Grande-
2iCs0oh0tay2mp, aeMy, a.U , HS6M. °2)G.. . 0FG'Sigu,u srt7ae8fss °s13o,6n .2 55. 'W44, (h6o0l0o tymp,e , 9A JAuUly; thsipeoernecs i easds iasLtprepiabesuat treCsd on nooctv eteronr b(aeL Ctrh)e rlaeacatictveoenrldeydi n lgaa nrtgdoe i IsUa arCesNase, sRstehedde
A speciebus Clusiae L. notis foliis obovatis crassisimmis, List criteria (IUCN, 2001). Some of the localities are
pcaopsistuisl ad isspthinageuriictuar .s tigmatibus peltatis dissitis infra apicem isdntorteoesnn gsin voeitml, yp hagocrwat zeevodenr ,b ytnh eegg oaatvitsve,ge lewyta htiaicofhfne .c cte Trtthhaieisn lsypt arhnoadbvsae b loyaf
Dioecious shrub or tree to 4 m tall; latex yellow; Clusia magnoliiflora,
branches terete, somewhat succulent, with constric-
vpcuiestniibeoalleet e a 8bata- 1xbi4aas lelmy, ,vm oe,fn 6alt aitmoon i8 no asfe tec5no5 no-db1as1rcy5u rveeX ib nus2t a5st-o 4amn6e atimnmgmeles, tsoim Ecietlyarmtraitoiynlo osgpfy e.t chiee Tsf hlooewf Mesrpsae,g cnwifohilcei an eLspe. iethne ft rormef ear sd istota ntchee,
of ca. 20°-30°, sparsely branched distally; laticifers Local names and uses. According to residents of
Lonya Grande (July 2002), the dried latex of Clusia
straight, thin, dense lines (white when fresh, blackish magnoliiflora is used as incense in churches, and the
Novon 20: 414^117. Published on 29 November 2010. doi: 10.3417/2009024
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