Thysanocarpus

Hooker

Fl. Bor.-Amer. 1: 69, plate 18, fig. A. 1830.

Common names: Fringepod lacepod
Etymology: Greek thysanos, fringe, and karpos, fruit, alluding to fruit margin
Treatment appears in FNA Volume 7. Treatment on page 739. Mentioned on page 225, 230, 232, 239.
 TaxonIllustrator 
FNA7 P90 Thelypodium crispum.jpegThelypodium crispum
Thelypodium milleflorum
Thysanocarpus radians
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey

Annuals; not scapose; (glaucous), glabrous or pubescent. Stems erect, unbranched or branched distally. Leaves basal and cauline; petiolate or sessile; basal (often withered by anthesis or fruiting), not or, rarely, rosulate, shortly petiolate, blade margins subentire, dentate, pinnatifid, or pinnatisect [rarely entire]; cauline sessile, blade (base usually auriculate), margins entire, dentate, or pinnatifid to pinnatisect. Racemes (corymbose, several-flowered), considerably elongated in fruit. Fruiting pedicels often recurved, sometimes divaricate-ascending, slender. Flowers: sepals ascending, oblong to ovate, lateral pair not saccate basally; petals white to purplish, spatulate to oblong, (subequaling or longer than sepals), claw not differentiated from blade; stamens slightly tetradynamous; filaments slightly dilated basally; anthers ovate; nectary glands each side of lateral stamen or semiannular, median glands absent. Fruits (pendulous), sessile, cymbiform, orbicular, obovate [ovate, elliptic], smooth, strongly latiseptate; valves each with prominent midvein, glabrous or pubescent; replum entire or crenate, often perforated, (winged, wing flattened, with radiating rays); septum obsolete; ovule 1 per ovary; style distinct (relatively short) or obsolete; stigma entire. Seeds aseriate, flattened, not winged, elliptical to orbicular; seed-coat not mucilaginous when wetted; cotyledons accumbent.

Distribution

w North America, nw Mexico

Discussion

Species 5 (4 in the flora).

Thysanocarpus erectus S. Watson occurs in northwestern Mexico on Cedros and Guadalupe islands and on the mainland of Baja California.

Selected References

None.

Key

1 Fruits cymbiform, wings strongly incurved (toward flat side of fruit); raceme internodes ca. 0.7-1.5(-2) mm in fruit. Thysanocarpus conchuliferus
1 Fruits flat or plano-convex, wings not strongly incurved; raceme internodes (1.5-)2-18 mm in fruit > 2
2 Fruiting pedicels weakly ascending, straight or nearly so (geniculately reflexed apically), 7-18 mm; fruits 7-10 mm wide, wings with distinct rays ± 0.1 mm wide. Thysanocarpus radians
2 Fruiting pedicels smoothly recurved or straight and stiffly spreading, 2-7(-12) mm; fruits 2.5-6(-9) mm wide, wings with indistinct rays or (0-)0.2-0.5 mm wide > 3
3 Cauline leaf blades lanceolate, widest at base, bases auriculate-clasping, auricles extending around stems (at least some leaves); basal leaf blade margins subentire to sinuate-dentate, never pinnatifid, surfaces often hirsute, sometimes glabrous. Thysanocarpus curvipes
3 Cauline leaf blades linear to narrowly elliptic, widest near middle or equally wide throughout, bases not auriculate or inconspicuous auricles not extending around stems; basal leaf blade margins pinnatifid, sinuate-dentate, or subentire, surfaces usually glabrous, rarely sparsely hirsute. Thysanocarpus laciniatus

"elongated" is not a number."thick" is not a number.

... more about "Thysanocarpus"
Patrick J. Alexander +  and Michael D. Windham +
Hooker +
appendaged +  and unappendaged +
not +  and auriculate +
pinnatisect +, pinnatifid +, dentate +  and subentire +
much smaller +  and reduced +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
not differentiated +
Fringepod +  and lacepod +
emarginate +  and entire +
w North America +  and nw Mexico +
straight +  and curved +
Greek thysanos, fringe, and karpos, fruit, alluding to fruit margin +
not winged +  and unappendaged +
connate +  and distinct +
zygomorphic +  and actinomorphic +
latiseptate +  and sessile +
obovate +, orbicular +  and cymbiform +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid;pinnatisect +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
white +  and purplish +
rudimentary +
spatulate +  and oblong +
trinucleate +  and 3(-11)-colpate +
Fl. Bor.-Amer. +
divaricate-ascending +  and recurved +
slender +
crenate +  and entire +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
elliptical +  and orbicular +
persistent +  and caducous +
distinct +
oblong +  and ovate +
perforated +  and complete +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
2-lobed +  and entire +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
Cruciferae +
Thysanocarpus +
Brassicaceae tribe Thelypodieae +
dendritic +  and simple +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
pubescent +  and glabrous +
perennial +, biennial +  and annual +
subshrub +  and shrub +
aquatics +  and terrestrial +
glabrous +  and pubescent +