Anelsonia

J. F. Macbride & Payson

Bot. Gaz. 64: 81. 1917.

Etymology: For Aven Nelson, 1859–1952, American botanist who studied the flora of Wyoming and neighboring states
Treatment appears in FNA Volume 7. Treatment on page 347. Mentioned on page 234, 236, 240, 241.

Perennials; (cespitose, deep-rooted); scapose; pubescent, trichomes short-stalked, dendritic or irregularly forked, (soft). Stems erect, unbranched. Leaves (persistent) basal; rosulate; petiolate; blade margins entire. Racemes (corymbose, few to several-flowered), not or slightly elongated in fruit. Fruiting pedicels ascending to suberect, slender. Flowers: sepals (early caducous, erect), oblong, (pubescent), base of lateral pair not saccate; petals white to purplish, oblanceolate, (slightly longer than sepals); stamens tetradynamous; filaments not dilated basally; anthers ovate; nectar glands confluent, subtending bases of stamens. Fruits (erect, siliques or silicles), sessile or short-stipitate, lanceolate, broadly oblong to narrowly ovate, not torulose, latiseptate; valves each with prominent midvein and somewhat anastomosing lateral-veins, glabrous; replum rounded; septum complete; ovules 10–24 per ovary; stigma capitate. Seeds biseriate, somewhat flattened, not winged, oblong to ovoid; seed-coat (silvery, papillate), not mucilaginous when wetted; cotyledons accumbent. x = 7.

Distribution

w United States

Discussion

Species 1.

Anelsonia is most closely related to Boechera and Phoenicaulis, from which it is readily distinguished by its scapose habit and papillate seeds.

Selected References

None.

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

... more about "Anelsonia"
Ihsan A. Al-Shehbaz +
J. F. Macbride & Payson +
appendaged +  and unappendaged +
dissected +, repand +, sinuate +, crenate +  and dentate +
much smaller +  and reduced +
urceolate +, campanulate +  and tubular +
branched +  and simple +
sessile +, subsessile +  and petiolate +
well-developed +
indistinct +
not +  and differentiated +
emarginate +  and entire +
w United States +
straight +  and curved +
For Aven Nelson, 1859–1952, American botanist who studied the flora of Wyoming and neighboring states +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
latiseptate +, short-stipitate +  and sessile +
not torulose +, broadly oblong +  and narrowly ovate +
connate +  and distinct +
decurrent +
dentate +  and entire +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
rudimentary +
trinucleate +  and 3(-11)-colpate +
elongated +
ascending +  and suberect +
slender +
mucilaginous +
not +  and mucilaginous +
White (?) +, Black (?) +, Brown (?) +  and Yellow (?) +
oblong +  and ovoid +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
procumbent +  and decumbent +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
Cruciferae +
Anelsonia +
Brassicaceae tribe Boechereae +
dendritic +  and short-stalked +
coiled +, 1-7-veined +  and veined +
anastomosing +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +