Sibaropsis

S. Boyd & T. S. Ross

Madroño 44: 30, figs. 2–4. 1997.

Etymology: Genus Sibara and Greek opsis, appearance
Treatment appears in FNA Volume 7. Treatment on page 694. Mentioned on page 233, 244, 676.
 TaxonIllustrator 
FNA7 P86 Hesperidanthus linearifolius.jpegHesperidanthus linearifolius
Sibara deserti
Sibaropsis hammittii
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey

Annuals; not scapose; (often glaucous), usually glabrous, sometimes glabrate, trichomes minute, (proximalmost leaves with evanescent cilia). Stems erect, often branched basally. Leaves basal and cauline; sessile; blade (base not auriculate), not rosulate, margins entire. Racemes (corymbose, several-flowered, lax), considerably elongated in fruit. Fruiting pedicels usually ascending, rarely straight, slender. Flowers: sepals erect, lanceolate to ovate-oblong, (subequal), lateral pair obscurely subsaccate basally; petals light purple or pink-lavender (with darker purplish veins, adaxial pair slightly larger), spatulate, claw well-differentiated from blade, (apex slightly emarginate to obcordate); stamens in 3 unequal pairs, (adaxial pair sterile); filaments not dilated basally, (adaxial pair ± connate); anthers ovate-oblong, (not apiculate); nectar glands lateral, (minute), median glands absent. Fruits tardily dehiscent, sessile, linear, smooth, slightly latiseptate; valves each with obscure midvein, glabrate, (margins minutely scabrous); replum rounded; septum complete; ovules 24–44 per ovary; style distinct; stigma subentire. Seeds uniseriate, flattened, obscurely winged distally, oblong; seed-coat not mucilaginous when wetted; cotyledons incumbent, (linear).

Discussion

Species 1.

Sibaropsis is unusual in Brassicaceae in that the inflorescence axis disarticulates distal to each pedicel and subtending axis internode, thus fruits are dispersed as individual units, except that the proximalmost fruits remain persistent.

Selected References

None.

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

... more about "Sibaropsis"
ovate-oblong +
Steve Boyd +
S. Boyd & T. S. Ross +
appendaged +  and unappendaged +
not rosulate +
not +  and auriculate +
dissected +, repand +, sinuate +, crenate +  and dentate +
much smaller +  and reduced +
urceolate +, campanulate +  and tubular +
branched +  and simple +
sessile +  and petiolate +
well-developed +
distinct +
well-differentiated +
emarginate +  and entire +
incumbent +  and accumbent +
straight +  and curved +
Genus Sibara and Greek opsis, appearance +
not winged +  and unappendaged +
connate +  and distinct +
zygomorphic +  and actinomorphic +
latiseptate +  and sessile +
4-angled +  and terete +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
lobed;dentate;lobed;dentate +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
unequal +
pink-lavender +  and light purple +
rudimentary +
spatulate +
trinucleate +  and 3(-11)-colpate +
slender +
mucilaginous +
aseriate +, uniseriate +  and biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
oblong +  and flattened +
not basally +  and saccate +
persistent +  and caducous +
distinct +
subsaccate +, lanceolate +  and ovate-oblong +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
procumbent +  and decumbent +
subentire +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
Cruciferae +
Sibaropsis +
Brassicaceae tribe Thelypodieae +
dendritic +  and simple +
coiled +, 1-7-veined +  and veined +
anastomosing +
glabrate +  and glabrous +
perennial +, biennial +  and annual +
subshrub +  and shrub +
aquatics +  and terrestrial +
glabrous +  and pubescent +