Selaginella watsonii Underw.

Watson's spikemoss (en)

Species

Pteridophytes > Lycopodiales > Selaginellaceae > Selaginella

Characteristics

Plants on rock or terrestrial, forming long or compact cushionlike mats. Stems radially symmetric, decumbent to long-creeping, not readily fragmenting, irregularly forked, without budlike arrested branches, tips straight; main stem conspicuously determinate, lateral branches conspicuously or inconspicuously determinate, strongly ascending, 1--3-forked. Rhizophores borne on upperside of stems, throughout stem length, 0.35--0.55 mm diam. Leaves monomorphic, in alternate pseudowhorls of 4, tightly or loosely appressed, ascending, green, linear-lanceolate, (2.5--)3--4 X 0.5--0.7 mm; abaxial ridges prominent; base cuneate, decurrent, glabrous or sometimes pubescent; margins entire or short-ciliate, cilia transparent, scattered, spreading, 0.05--0.1 mm; apex strongly keeled, obtuse, abruptly bristled; bristle whitish to transparent, smooth, 0.25--0.5 mm. Strobili solitary, 0.5--3(--3.5) cm; sporophylls lanceolate to ovate-lanceolate, abaxial ridges well defined, base glabrous, margins entire, rarely dentate, apex strongly keeled to truncate in profile, short-bristled.
Life form perennial
Growth form herb
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Foliage retention evergreen
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Hardiness (USDA) 4-10

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Cultivation

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Images

Selaginella watsonii unspecified picture

Distribution

Selaginella watsonii world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:232346-2
WFO ID wfo-0001109690
COL ID 4WCNX
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Selaginella watsonii Bryodesma watsonii