Key to Cymopterus

View taxon page for Cymopterus

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

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

1. Rays ± 0, umbels dense, spheric; bractlets 0 or poorly developed

2. Leaf minutely hairy or roughened; bracts conspicuous, fused proximally; fruit glabrous ..... C. cinerarius

2' Leaf glabrous; bracts 0; fruit hairy

3. Leaf round, ternate ..... C. ripleyi

3' Leaf oblong-ovate, ternate to 2-pinnate or 2-pinnately dissected

4. Stem 0; fruit wings unequal ..... C. deserticola

4' Stem short, underground; fruit wings ± equal ..... C. globosus

1' Rays ± developed, umbels open to ± dense, not spheric; bractlets generally evident

5. Plant not woody; corolla ± purple; 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

 

simple 

Composed of a single part; undivided; unbranched.

to 2-pinnately dissected or compound, 

lobes 

1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth.

, segments, or leaflets wider than 

linear 

Elongate, with nearly parallel sides; narrower than elliptic or oblong.

6. Bracts 0; leaf round-reniform, ternate ..... C. gilmanii

6' Bracts conspicuous, scarious, veiny; leaf oblong-ovate, 1–2-pinnate or -ternate

7. Bracts and bractlets ± green or ± purple, with many green or purple veins; 

pedicels 

Stalk of an individual flower in an inflorescence, or the corresponding structure in fruit.

< 1 mm ..... C. multinervatus

7' Bracts and bractlets white, with 1–5 green or white veins; pedicels 3–8 mm ..... C. purpurascens

5' Plant woody at base; corolla ± yellow or white; leaf finely dissected, segments generally ± linear

8. Leaf finely hairy; corolla white; umbels ± dense ..... C. aboriginum

8' Leaf glabrous; corolla ± yellow; umbels open

9. Rays generally unequal; calyx lobes persistent; bractlets generally < mature pedicels ..... C. terebinthinus

10. Leaf 

blade 

Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.

length ± = width; KR, NCoRO, CaRH, SNH, n SNE ..... var. californicus

10' Leaf blade length >> width; c SNE ..... var. petraeus

9' Rays ± equal; calyx lobes 0; bractlets > mature pedicels ..... C. panamintensis

11. Leaf segments not crowded, 3–20 mm, flexible ..... var. acutifolius

11' Leaf segments ± crowded, 1–5 mm, rigid ..... var. panamintensis

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