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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

SELAGINELLA SPIKE-MOSS
(Latin: small Selago, ancient name for some Lycopodium) Some cultivated as groundcover, curiosity: Selaginella kraussiana (Kunze) A. Braun; Selaginella lepidophylla (Hook. & Grev.) Spring, resurrection plant. Hand lens, generally at ± 20×, required for leaves (shape, margin, awn at tip), cones. Selaginella kraussiana may be naturalized in California, differs from native California taxa in leaves lacking abaxial groove.
Unabridged note: All native California taxa in subgenus Tetragonostachys.

Key to Selaginella

1. Leaf tip awn 0 or inconspicuous

2. Leaves of main stem not pointed up, under-leaves ± like over-leaves; leaves near tip of sterile shoots generally < 0.4 mm wide; plant pale green aging tan ..... S. cinerascens

2' Leaves of main stem with tips pointed up, under-leaves longer, more curved around stem than over-leaves; leaves near tip of sterile shoots often > 0.4 mm wide; plant green aging orange-brown ..... S. eremophila

1' Leaf tip awn >> leaf margin teeth

3. Plant in festoons, curly when dry; on, under trees; humid North Coast, Klamath Ranges, Outer North Coast Ranges ..... S. oregana

3' Plant erect, creeping, or mat-forming, not curly when dry; not on, under trees; humid North Coast, Klamath Ranges, Outer North Coast Ranges or not

4. Plant with ± erect rootless stems arising from ground; leaf base hairs on margins, abaxial surface ..... S. bigelovii

4' Plant without ± erect rootless stems arising from ground; leaf base hairs generally on margins only (also on surfaces in Selaginella asprella)

5. For most sterile leaves of main stem, distance from end of abaxial groove to base of awn generally > 1/3 maximum leaf width; awns generally entire; 1350–4100 m ..... S. watsonii

5' For most sterile leaves of main stem, distance from end of abaxial groove to base of awn < 1/3 maximum leaf width; awns toothed; < 2700 m

6. Plant with some leaves red, pink-red, or red-streaked; plant not dense cushions, at margins loosely spreading, branching ± pinnate; s Inner North Coast Ranges, Cascade Range, Sierra Nevada, Sacramento Valley (Sutter Buttes), n South Coast Ranges; 250–1700 m ..... S. hansenii

6' Plant without any leaves red, pink-red, or red-streaked; plants dense cushions or not, at margins not loosely spreading, branching not pinnate; Northwestern California, n Sierra Nevada Foothills (Butte Co.), n&c High Sierra Nevada, s Sierra Nevada, n San Francisco Bay Area (Marin Co.), Transverse Ranges, Peninsular Ranges, Desert Mountains; 600–2700 m

7. Awn length often > leaf width, margins with cilia >> 3 × longer than wide; leaf hairs on surface at base on some leaves ..... S. asprella

7' Awn length generally < leaf width, margins with teeth generally < 3 × longer than wide; leaf hairs on margins only

8. Branches not elongate, not spreading, 2° branches rarely above substrate; stem fragile when dry; Desert Mountains ..... S. leucobryoides

8' Branches ± elongate, often spreading, 2° branches frequently above substrate; stem ± not fragile when dry; n California

9. Tip of leaf near sterile stem tip with end of abaxial groove not surrounded by thickening; leaves of main stem generally swept upward, under-leaves curved, ± > over-leaves, decurrent; sterile shoot internodes generally < 7 mm, tip with distal-most awns more exserted than those just below ..... S. scopulorum

9' Tip of leaf near sterile stem tip with end of abaxial groove surrounded by thickening; leaves of main stem not swept upward, ± alike, under-leaves rarely unlike over-leaves, not decurrent; sterile shoot internodes often > 7 mm, tip with distal-most awns not more exserted than those just below ..... S. wallacei

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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