Directory       News       Site Map       Home
         
    Jepson eFlora
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.

 

LAGOPHYLLA HARE-LEAF

Bruce G. Baldwin


Annual 1–10(15) dm. Stem: ± erect. Leaf: mostly cauline, proximal opposite, most alternate, ± sessile; blade narrowly elliptic to linear or proximal oblanceolate to spoon-shaped, entire or proximal sometimes toothed, coarse-, soft-, or silky-hairy or strigose, all or distal sometimes also stalked-glandular. Inflorescence: heads radiate, in tight groups or ± panicle-like clusters; involucre 3–6+ mm diam, ± hemispheric or obovoid to obconic, sometimes subtended by calyx-like set of bracts; phyllaries 5 in 1 series, linear to oblanceolate, each wholly enveloping a subtended ray ovary, spreading and falling with fruit, coarsely long-straight-hairy to minutely coarse-hairy or scabrous on angles; receptacle flat to convex, densely bristly; paleae in ring between ray and disk flowers, fused or free, scarious. Ray flower: 5; corolla yellow, ray fan-shaped, deeply lobed, abaxially often red- to purple-veined. Disk flower: 6, staminate; corolla yellow, tube < throat, lobes deltate; anthers ± dark purple, tips triangular-ovate to ± rounded; style glabrous proximal to undivided, awl-shaped, short-hairy tip. Fruit: ray fruit ± compressed front-to-back, glabrous, black, tip beakless, pappus 0; disk fruit 0, pappus 0.
4 species: California, to Washington, Montana, Nevada. (Greek: hare leaf, for soft-hairy leaves) [Baldwin & Strother 2006 FNANM 21:260–261] Easily overlooked; leaves wither early, heads close at mid-day.
Unabridged references: [Thompson 1983 Ph.D. Dissertation, Univ of California, Davis; Baldwin & Strother 2006 FNANM 21:260–261]

Key to Lagophylla

1. Ray 3–6 mm; leaves ± gray, distal stalked-glandular abaxially, glands generally ± white or yellow, sometimes golden-brown; stem glandless; heads in tight groups or open, panicle-like clusters; calyx-like bracts subtending involucre 2–5; phyllaries coarsely long-straight-hairy on angles ..... L. ramosissima

1' Ray (4)7–13 mm; leaves green or gray-green, distal glandless or stalked-glandular, glands yellow, golden, ± white, or purple; stem glandless or distally stalked-glandular; heads in panicle-like clusters; calyx-like bracts subtending involucre 0 or 2–5; phyllaries scabrous or minutely coarsely hairy to coarsely long-straight-hairy on angles

2. Main stem axis obvious; distal leaves stalked-glandular, glands yellow or golden; calyx-like bracts subtending involucre 3–5; involucre obconic; phyllaries minutely coarsely hairy to coarsely long-straight-hairy on angles, hairs 0.3–1+ mm, ± widely spreading or curved toward phyllary tip ..... L. glandulosa

2' Main stem axis often not obvious, ± zigzag; distal leaves glandless or stalked-glandular, most glands purple, some yellow; calyx-like bracts subtending involucre 0 or 2–3; involucre ± hemispheric to obovoid; phyllaries ± minutely coarsely hairy or scabrous or coarsely long-straight-hairy on angles, hairs 0.1–1+ mm, ± curved toward phyllary tip

3. Phyllaries 4–6.5 mm, ± minutely coarsely hairy to scabrous on angles, hairs 0.1–0.6 mm; fruit dull ..... L. dichotoma

3' Phyllaries 4–5 mm, coarsely long-straight-hairy on angles, hairs 0.5–1+ mm; fruit shiny ..... L. minor

Contact/Feedback

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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.