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Key to families | Table of families and genera
This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press.
Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. 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.
Annual, perennial herb, erect to mat-forming, taprooted or rhizomed.
Leaf: blade thread-like to awl-shaped or narrowly oblong; veins or ribs 1–3.
Inflorescence: terminal or axillary, open to ± dense; flowers 1–many; peduncles, pedicels 0.5–35+ mm.
Flower: hypanthium short, obscure; sepals 5, ± free, 1.9–7 mm, ± lanceolate to ovate, glabrous to glandular-hairy; petals 5 or 0, 0.7–10 mm, entire or notched; stamens on an obscure to prominent disk; styles 3, 0.3–2 mm.
Fruit: capsule, narrowly ovoid to widely elliptic; valves 3, ascending to recurved.
Seed: 1–many, red-tan to red-, purple-, or black-brown.
175 species: arctic to Mex, n Africa, s Asia. (J. Minuart, Spanish botanist, pharmacist, 1693–1768) [Rabeler et al. 2005 FNANM 5:116–136]
Unabridged references: [Meinke & Zika 1992 Madroño 39: 288–300]
1. Annual, not cespitose, not mat-forming
2. Infl ± glandular-hairy; leaf (5)10–30 mm; seed 1.3–2 mm
3. Lvs ± evenly spaced, thread-like, generally 0.3 mm wide, flexible, becoming curled; seeds red-brown, margin thin, wing-like ..... M. douglasii
3' Lvs mostly near base, lance-linear, 1–1.5(2.5) mm wide, rigid, recurved; seeds brown to black-brown, margin thick, not wing-like ..... M. howellii
2' Infl glabrous; leaf 1.5–7(10) mm; seed 0.4–1 mm
4. Petals < sepals or 0; plants 1–5 cm; leaf, sepal vein generally 1, often faint ..... M. pusilla
4' Petals 1–1.8 × sepals; plants generally 5–25 cm; leaves, sepals with veins ± 3, faint, or ribs 3 or 5, prominent
5. Petals 1.5–1.8 × sepals; sepal veins 3, faint, lateral pair rarely extending to tip ..... M. californica
5' Petals 1–1.3 × sepals; sepal ribs 3 or 5, prominent, lateral pair converging with midrib at tip ..... M. cismontana
1' Perennial, cespitose to mat-forming
6. Sepal tip narrowly rounded, margin incurved ..... M. obtusiloba
6' Sepal tip acute to acuminate, margin not incurved
7. Plant ± densely cespitose, stem decumbent to erect; taproot < 1.5 mm diam
8. Petals ± 0.8–1 × sepals; plant glandular-hairy ..... M. rubella
8' Petals 0; plant glabrous ..... M. stricta
7' Plant mat-forming, rhizomes elongate and stem or stolons trailing; taproot > 3 mm diam
9. Plant densely glandular-hairy ..... M. nuttallii
10. Lf recurved; sepal ribs (1)3, ± equally prominent ..... var. fragilis
10' Lf straight or ± recurved; sepal ribs 1 or 3, lateral pair 0 or less prominent
11. Petals 0.7–0.9 × sepals; KR, CaRH, SNH, SnGb, SNE ..... var. gracilis
11' Petals 1.1–1.6 × sepals; NW, CaRH, c SNH, Wrn ..... var. gregaria
9' Plant generally glabrous or ± sparsely glandular-hairy especially in inflorescence; stem, leaves ± glabrous
12. Sepals 5–6 mm, in flower generally 3-ribbed; petals 0.7–0.9 × sepals ..... M. decumbens
12' Sepals 2.5–4.8 mm, in flower faintly 1–3-veined; petals 1.4–2.2 × sepals
13. Plant glaucous; flower stem from branching rhizomes; leaves > internodes; axillary leaves well developed ..... M. rosei
13' Plant gray-green; flower stem from stolons; leaves often < internodes; axillary leaves weakly developed ..... M. stolonifera
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].
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