Jepson eFlora
Key to families | Table of families and genera

Key to Selaginella

View taxon page for Selaginella

(For a list of species in Selaginella, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Leaves of 2 kinds, in 4 ranks, lacking abaxial groove; stems with slight swellings (articulations; often inconspicuous) at branch points ..... S. kraussiana

1' Leaves ± of 1 kind, not in distinct ranks, with abaxial groove; stems lacking articulations

2. Leaf tip awn 0 or inconspicuous

3. 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

3' 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

2' Leaf tip awn >> leaf margin teeth

4. Plant often on trees, occasionally on rocks, curly when dry; rhizophores limited to lower ~1/3 of stem; humid North Coast, Klamath Ranges, Outer North Coast Ranges ..... S. oregana

4' Plant not on trees, usually on rocks, not curly when dry; rhizophores present in distal 1/2 of stem (except S. bigelovii); humid North Coast, Klamath Ranges, Outer North Coast Ranges or not

5. Plant with ± erect stems lacking rhizophores; leaf base hairs on margins, abaxial surface ..... S. bigelovii

5' Plant without ± erect rootless stems lacking rhizophores; leaf base hairs generally on margins only (also on surfaces in Selaginella asprella)

6. 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

6' 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

7. 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

7' 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

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

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

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

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

10. 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

10' 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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