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Thysanocarpus radians


Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key
Common Name: MUSTARD FAMILY
Habit: Annual to shrub; sap pungent, watery. Leaf: generally simple, alternate; generally both basal, cauline; stipules 0. Inflorescence: generally raceme, generally not bracted. Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed. Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not. Seed: 1--many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
Genera In Family: +- 330 genera, 3780 species: worldwide, especially temperate. Note: Highest diversity in Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in central NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella.
eFlora Treatment Author: Ihsan A. Al-Shehbaz, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: ThysanocarpusView DescriptionDichotomous Key


Common Name: LACEPOD, FRINGEPOD
Habit: 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.
Etymology: (Greek: fringe fruit)
eFlora Treatment Author: Ihsan A. Al-Shehbaz & Thomas J. Rosatti
Reference: Revised taxonomy based on Alexander et al. (2010 Syst Bot 35:559--577).
Thysanocarpus radians Benth.
NATIVE
Habit: Plant glabrous (with sparse, rough, stiff hairs near base). Stem: 1.5--6 dm. Leaf: basal 1.5--4 cm, oblanceolate, wavy-dentate to pinnately lobed; cauline lanceolate to ovate-lanceolate, bases lobed, clasping. Inflorescence: open. Flower: fertile anthers yellow. Fruit: 7--10 mm wide, round, hairs 0 or generally +- 0.2 mm, club-shaped; wing flat or +- incurved toward over-seed convex side, entire or wavy-margined, rays +- 0.1 mm wide, distinct; proximal pedicels +- straight except sharply reflexed near tips, 7--18 mm.
Ecology: Moist slopes, pastures, open meadows, fields; Elevation: < 800 m. Bioregional Distribution: NW, CaRF, SNF, GV, SnFrB, SCoRI; Distribution Outside California: Oregon. Flowering Time: Mar--Apr
Synonyms: Thysanocarpus radians var. montanus Jeps.
Jepson eFlora Author: Ihsan A. Al-Shehbaz & Thomas J. Rosatti
Reference: Revised taxonomy based on Alexander et al. (2010 Syst Bot 35:559--577).
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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botanical illustration including Thysanocarpus radians

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Citation for this treatment: Ihsan A. Al-Shehbaz & Thomas J. Rosatti 2013, Thysanocarpus radians, in Jepson Flora Project (eds.) Jepson eFlora, Revision 1, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=46556, accessed on April 24, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 24, 2024.

Thysanocarpus radians
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©2004 Carol W. Witham
Thysanocarpus radians
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©2007 Neal Kramer
Thysanocarpus radians
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©2004 Carol W. Witham
Thysanocarpus radians
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©2000 John Game
Thysanocarpus radians
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©2013 California Academy of Sciences

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Geographic subdivisions for Thysanocarpus radians:
NW, CaRF, SNF, GV, SnFrB, SCoRI
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

Data provided by the participants of the  Consortium of California Herbaria.
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Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).