Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera
    Index to accepted names and synonyms:
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Key to Myriopteris

View taxon page for Myriopteris

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

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

1. Leaf  with scales, nonglandular; young  tip hooked

2. Rhizome scales loosely , 1-colored; sporangia 32-spored;  long-creeping, leaves scattered ..... M. wootonii

2' Rhizome scales strongly appressed, 1- or 2-colored; sporangia 64-spored; rhizome ± short-creeping, leaves clustered

3. Rhizome scales 1- or 2-colored, dark brown or black, some with narrow light brown margin; scales on abaxial leaf ± > 1 mm wide, obscuring surface, exceeding margin ..... M. covillei

3' Rhizome scales 2-colored, with dark mid-stripe, light margins; scales on abaxial leaf ± < 1 mm wide, not obscuring surface, ± exceeding margin

4. Leaf blade scales , 2–3(5) cells wide; leaf 2–3 segments ± round to generally  ..... M. gracillima

4' Leaf blade scales lance-ovate, > 5 cells wide; leaf 3–4 pinnate, segments ± round

5. 2-colored rhizome scales with well-defined, dark mid-stripe and light brown margins 1/2 to = width of mid-stripe; leaf gray-green, segments round to ±  ..... M. clevelandii

5' 2-colored rhizome scales with well-defined, dark mid-stripe and light brown margins much narrower than mid-stripe; leaf dark green, segments ± round ..... M. intertexta

1' Leaf blade without scales, glandular or not; young leaf tip hooked or coiled

6. Rhizome scales with dark mid-stripe; young leaf tip coiled

7. Hairs on leaf segment adaxially sparse, generally not intertwined; dark mid-stripe of rhizome scales not thread-like, > 0.1 mm wide at base;  stalk ± 0–1 mm;  stalk ± green adaxially, ± brown abaxially ..... M. gracilis

7' Hairs on leaf segment adaxially dense, intertwined; dark mid-stripe of rhizome scales thread-like, < 0.1 mm wide at base; pinna stalk 1–2(5) mm; pinnule stalk generally ± brown adaxially, abaxially ..... M. parryi

6' Rhizome scales without dark mid-stripe; young leaf tip hooked or coiled

8. Leaf surface with ± clear, sticky exudate, generally with short glandular hairs and  glands ..... M. viscida

8' Leaf surface without sticky exudate, with short or long, glandular or nonglandular hairs

9. Rhizome scales of 1 kind, tan to red-brown ± throughout; leaf segment abaxial surfaces visible through ± sparse, untangled, glandular and nonglandular hairs; young leaf tip coiled; rhizome short-creeping ..... M. cooperae

9' Rhizome scales of 2 kinds, some maroon with a tan, curly, hair-like tip, others tan ± throughout, narrower; leaf segment abaxial surfaces not visible through dense, tangled, nonglandular hairs; young leaf tip hooked; rhizome short- to long-creeping ..... M. newberryi

 

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, http://ucjeps.berkeley.edu/eflora/ [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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