Selaginella rupestris and Its Allies

Lucien Marcus Underwood
1898 Bulletin of the Torrey Botanical Club  
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more » ... out Early Journal Content at http://about.jstor.org/participate--jstor/individuals/early-journal--content. JSTOR is a digital library of academic journals, books, and primary source objects. JSTOR helps people discover, use, and build upon a wide range of content through a powerful research and teaching platform, and preserves this content for future generations. JSTOR is part of ITHAKA, a not--for--profit organization that also includes Ithaka S+R and Portico. For more information about JSTOR, please contact support@jstor.org. UNDERWOOD: SELAGINELLA RUPESTRIS AND ITS ALLIES 131 this species -we wvould also refer Parish no. 67I, San Bernardilno, Coville & Funstoni no. IOI from the same locality, and specimens collected from " San Ysabel " by II. WV. Henshaw. 7. SELAGINELLA TORTIPILA A. Br. Ann. Sc. Nat. V. 3: 2. I 865. Stems 20-25 cm. long, more or less flexuous, with the elongate primary branches compound, rooting only near the base; leaves loosely imbricate, about six-ranked, narrowly lanceolate, scarcely channeled dorsally, ending in a contorted or irregularly coiled elongate hair poilnt; margins with 6-I 2 very short cilia on either side : spikes very short (4-5 mm.) borne at the ends of ordinary branches, subquadrangular, but with loosely spreading broadly ovate-lanceolate bracts, xvhich are dorsally channeled and bear marginal cilia and terminal hairs similar to those of the stem leaves. Described from the type specimen, a duplicate of which, mixed with S. rutpesitris, has recently come into our possession, " In locis rupestribus humidis montium ad Broad River, Carolina, Sept. legit Rugel, July, 1841." Fragmentary specimens had hitherto been seen from Caesar's head, South Carolina, and from Saboola Mountain, Maconl County, North Carolina, both collected by J. Donnell Smith. This is the species wvhich Baker describes as " a dwarf form of S. rutpestis, but which Milde characterizes very justly as " species pulcherrima !" The plant is much more elongate though more slender than S. r-upestris, with wvhich it has otherwise little in common. SELAGINELLA EXTENSA sp. nov. Stems slender, trailing, 35-40 cm. long, copiously emitting roots throughout their whole extent, with numerous primary branches 1.5-4 cm. long; leaves dark green, narrowly lanceolate with a slight dorsal channel, ending in a very short brownislh or translucent point, mostly with no terminal spine: marginal cilia few, appearing like minute serrulations : spikes single or oftenl in' pairs at the ends of the primary branches, 1-2 cm. long, the bracts broadly lanceolate, ending abruptly in a point, strongly ciliolate on the margins. On rocks and trees, Las Canoas, San Luis Potosi, Mexico. Pringle, no. 3900, August 2I, I89I. Specimens are also in the Meissner Herbarium, collected in Mexico by C. Maller.
doi:10.2307/2477710 fatcat:whk2seq4ijhe5m4xwt2uyz7mzy