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synthlipsis

Habit Annuals, biennials, or perennials; (short-lived, sometimes cespitose); not scapose; pubescent throughout, trichomes dendritic, base of plant sometimes mixed with fewer, simple or forked, stalked ones.
Stems

ascending to decumbent, unbranched or branched distally.

Leaves

basal and cauline;

petiolate or sessile;

basal rosulate, petiolate, blade margins usually sinuately lobed to dentate, rarely repand;

cauline petiolate or sessile, blade similar to basal.

Racemes

(corymbose, several-flowered), slightly or considerably elongated in fruit.

Flowers

sepals spreading, narrowly oblong, (equal), lateral pair not saccate basally;

petals white to violet [purple], broadly obovate, (much longer than sepals), claw differentiated from blade, (much shorter, apex rounded);

stamens tetradynamous;

filaments not dilated basally, (somewhat spreading);

anthers linear [narrowly oblong];

nectar glands confluent, subtending bases of stamens.

Fruiting pedicels

divaricate or divaricate-ascending, slender.

Fruits

silicles, sessile, broadly oblong [broadly elliptic], smooth, angustiseptate;

valves carinate;

replum rounded;

septum complete;

ovules 10–50 per ovary;

style distinct;

stigma broadly capitate, entire.

Seeds

± biseriate, flattened, not winged, narrowly margined, broadly ovate;

seed coat (nearly smooth), copiously mucilaginous when wetted;

cotyledons accumbent.

x

= 10.

Synthlipsis

Distribution
from FNA
TX; n Mexico
[BONAP county map]
Discussion

Species 2 (1 in the flora).

Synthlipsis densiflora Rollins is known from Mexico (Coahuila).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 7, p. 665. Author: Ihsan A. Al-Shehbaz.
Parent taxa Brassicaceae > tribe Physarieae
Subordinate taxa
S. greggii
Name authority A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 116. (1849)
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