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.



Ihsan A. Al-Shehbaz & Thomas J. Rosatti

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; fertile anthers yellow or generally purple (flowers occasionally with whitish or yellowish infertile anthers). Fruit: indehiscent, pendent, elliptic to ovate or round, unsegmented, over-seed (i.e., excluding wing) generally plano-convex; septum 0; wing generally not incurved toward over-seed flat side, entire, wavy-margined, crenate, perforated, or divided into spoon-shaped lobes, rays (radiating veins) present or not, generally ± indistinct; stigma entire. Seed: 1, elliptic to round, wingless.
6 species: western North America. (Greek: fringe fruit) [Revised taxonomy based on Alexander et al. (2010 Syst Bot 35:559–577).]

Key to Thysanocarpus

1. Proximal pedicels in fruit 7–18 mm, ± straight except sharply reflexed near tips; fruit 7–10 mm wide, wing rays ± 0.1 mm wide, distinct; fertile anthers yellow ..... T. radians

1' Proximal pedicels in fruit 1.5–7(12) mm, recurved in a continuous arc, ± recurved, straight, or ± straight but not reflexed near tips; fruit 2.5–6(9) mm wide, wing rays 0 or 0.2–0.5 mm wide, distinct or generally ± not; fertile anthers yellow or purple

2. Fruit round, wing strongly incurved toward over-seed flat side, with spoon-shaped lobes or occasionally perforated; proximal pedicels in fruit straight or ± recurved; fertile anthers yellow ..... T. conchuliferus

2' Fruit obovate to round, wing not incurved toward over-seed flat side, flat or ± incurved toward over-seed convex side, entire, wavy-margined, shallowly to deeply crenate, with spoon-shaped lobes, or perforated; proximal pedicels in fruit ± straight or recurved in a continuous arc; fertile anthers yellow or purple

3. Cauline leaves linear to narrowly elliptic, bases wedge-shaped, ± lobed or not, ± not clasping (lobed, clasping); basal leaves subentire, wavy-dentate, or pinnately lobed; fertile anthers yellow or purple

4. Fruit hairs 0 or generally 0.05–0.1 mm, club-shaped; fertile anthers yellow ..... T. desertorum

4' Fruit hairs 0.05–0.4 mm, club-shaped, or generally 0; fertile anthers purple

5. Proximal pedicels in fruit recurved in continuous arc; plants generally not branched from base; leaves generally greenish or basal occasionally purplish; fruit greenish ..... T. laciniatus

5' Proximal pedicels in fruit ± straight; plants branched from base; leaves purplish; fruit often purplish ..... T. rigidus

3' Cauline leaves lanceolate, bases lobed, clasping; basal leaves subentire to wavy-dentate; fertile anthers purple ..... T. curvipes

6. Stem hairy proximally, glabrous distally

7. Fruit >= 6 mm, 5.5–7(9) mm wide, wing perforated ..... subsp. elegans

7' Fruit < 6 mm, 3.0–5.5(6.5) mm wide, wing entire, crenate, divided into spoon-shaped lobes, or perforated

8. Style 0.2–0.6(0.7) mm ..... subsp. curvipes

8' Style 0.9–1.5(1.8) mm ..... subsp. longistylus (2)

6' Stem glabrous

9. Style 0.9–1.5(1.8) mm ..... subsp. longistylus (2)

9' Style 0.2–0.7 mm

10. Fruit wing rayed, entire, crenate, with spoon-shaped lobes, or perforated..... subsp. amplectens

10' Fruit wing not rayed, entire to shallowly crenate ..... subsp. eradiatus


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [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.