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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; hairs 0 or simple.
Leaf: simple, sessile, entire, dentate, or pinnately lobed; middle, distal cauline clasping, lobed or not.
Inflorescence: open ( dense).
Flower: sepals ascending, base not sac-like; petals ± >= sepals, white or ± purple-tinged, not clawed.
Fruit: silicle, indehiscent, elliptic to ovate or round, flat, unsegmented, pendulous; septum 0; wing entire or lobed, generally perforated, veins radiating or not; stigma entire.
Seed: 1, elliptic to round, wingless.
5 species: w North America. (Greek: fringe fruit) Revised taxonomy, too late for full treatment here, including Thysanocarpus desertorum A. Heller [Thysanocarpus laciniatus var. hitchcockii], Thysanocarpus rigidus (Munz) P.J. Alexander & Windham [Thysanocarpus laciniatus var. rigidus], 5 subspp. of Thysanocarpus curvipes (Alexander et al. 2010 Syst Bot 35:559–577).
1. Pedicel sharply reflexed near tip, proximal 7–18 mm; fruit 7–10 mm wide, wing rays ± 0.1 mm wide ..... T. radians
1' Pedicel ± curved or straight, proximal 2–7(12) mm; fruit 2.5–6(9) mm wide, wing rays 0, or 0.2–0.5 mm wide
2. Fr round, bowl-shaped, wing strongly curved towards flat or concave side; pedicel straight or ± curved ..... T. conchuliferus
2' Fr obovate to round, flat, wing flat or ± curved towards convex side; pedicel curved
3. Mid-cauline leaves lanceolate, sagittate or generally clasping at base; basal leaves sparsely hairy (glabrous), entire or dentate, not pinnately lobed ..... T. curvipes
3' Mid-cauline leaves linear, tapered at base (minutely lobed); basal leaves generally glabrous, generally pinnately lobed or wavy-dentate ..... T. laciniatus
4. Fr hairs club-shaped, 0.05–0.1 mm ..... var. hitchcockii
4' Fr glabrous or hairs occasionally club-shaped, 0.2–0.4 mm
5. Pedicels gently recurved; leaves ± green throughout (base ± purple); basal leaves pinnately lobed or wavy-dentate ..... var. laciniatus
5' Pedicels ± straight; leaves ± purple throughout; basal leaves ± entire to wavy-dentate ..... var. rigidus
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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