Key to Hemizonia congesta

View taxon page for Hemizonia congesta

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

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

1. Heads generally nearly 

sessile 

Without a petiole, peduncle, pedicel, or other kind of stalk.

along well-developed side branches of flowering stems; ray white, purple-veined abaxially

2. Peduncle bracts and calyx-like bracts subtending 

head 

1. A dense, often spheric inflorescence of sessile or subsessile flowers.
2. In Asteraceae and some other groups, a head-like inflorescence is one in which sessile or subsessile inflorescence units (e.g., heads in Asteraceae, umbels enclosed by involucres in Eriogonum), instead of individual flowers, are attached in a short dense cluster without an evident axis or branches.

often much exceeding phyllaries; phyllaries 6–12 mm, tips generally > bodies; fruit width 0.5–0.6 × length ..... subsp. calyculata

2' Peduncle bracts not or barely exceeding phyllaries, calyx-like bracts subtending head 0; phyllaries 3–7 mm, tips generally < bodies; fruit width 0.6–0.75 × length ..... subsp. clevelandii

1' Heads generally terminating elongate side branches of flowering stems or ± sessile in tight groups; ray white or yellow, purple-veined abaxially or not

3. Leaves generally 

puberulent 

Minutely hairy.

or minutely bristly or 

strigose 

With stiff, straight, sharp, appressed hairs.

and nonglandular, distal rarely long-soft-hairy and glandular; ray white, not purple-veined abaxially except NCo; heads in panicle-like cluster ..... subsp. tracyi

3' Leaves short-hairy, ± shaggy, or silky-hairy, all or distal glandular; ray white or yellow, purple-veined abaxially; heads in panicle-like cluster or in tight groups

4. Leaves ± shaggy, hairs at margins often longer on distal leaves; some or all heads generally in tight groups, sometimes in flat-topped or panicle-like cluster; phyllaries 6–10 mm, tips generally > bodies; ray white ..... subsp. congesta

4' Leaves short-hairy, ± shaggy, or silky-hairy, hairs at margins not notably longer on distal leaves; heads in panicle-like cluster; phyllaries 3–7(8) mm, tips generally < bodies; ray white or yellow

5. Ray yellow ..... subsp. lutescens

5' Ray white ..... subsp. luzulifolia

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