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AMERICAN FERN VOLUME NUMBER 64 JOUIiNAL: 85 2 (1995) — Cryptogramma On we acrostichoides in South Dakota. 10 1994, July dis- covered an abundance Cryptogramma Squaw of acrostichoides R. Br. in Creek km Canyon about 6.5 west of Lead, Lawrence County, South Dakota. This canyon numerous has outcrops of igneous rock that contrast with the mostly sedimentary formations found in the Black Plants were located on both Hills. and canyon the east- west-facing sides of the in crevices of the rock outcrops. m The elevation ranges from about 1675 1770 (5500-5800 The popula- to ft). tion has likely been overlooked because of the difficult accessibility on private property. Vouchers {Darn 5733) have been deposited MO, RM, and SDU. at The species found on non-sedimentary formations throughout most is of the western cordillera. The closest previously known location in the Big Horn is km Mountains, Sheridan County, Wyoming, about 270 west.—Robert the to WY DoRN, Box D. 1471, Cheyenne, 82003, and Richard Harner, 5721 F. S. CO Spotswood 80120. Littleton, St., Caribbean taxonomic treatment from from Cuba lyzed, the (without Wright 870 [BM, MO]) and first locality, C. the second from Puerto Rico (Aguas Blanner Claras, [BM]). Recently, another s.n. from Cuba was collection determined as this species (Prov. Santiago de Cuba, [HAC, and common Caluffs.n. SP]) called to our attention that this taxon not is Cuba. in In addition, the collector suggested that very unlikely that this is it species represents an escape from Cuba no cultivation in evidence as their is for its horticultural use on the island. As noted by Lowe and {Ferns: British Groombridge and Sons, London, 1872). a difficult is it to cultivate. known Caribbean was oreviouslv made Nova in Hispaniola (Swartz, plantarum seu prodromus, M. D. Holmiae, Stockholm, The 1788). earliest col- Cuba lection ft-om probably dates to 1822 (without Poeppig [MO]), locality, s.n. but the Wright collection above formed cited the basis for the published first reports fi-om the country (Grisebach, Catalogus Plantarum Cubensium, W. En- gelmann, Leipzig, 1866; Sauvelle, Flora Cubana, Imp. "La Havana, Antilla", 1873). Several recent pteridophyte floras for various other portions of the Ca- by ribbean Proctor (Flora of the Lesser Antilles 2:1-414, Ferns 1977; of Ja- Museum maica, New British (Natural London. Mem. History), 1985; York Bot. Gard mention the In Cuba, denticulata grows open P. in places of secondary vegetation on m humid The from elevation. materials are clearly var delimitation Prado, Amer. Fern in 83:131-134, Based on 1993). a survey of J. the and specimens major we literature at herbaria, conclude coUec- that the