Difference between revisions of "Brassicaceae tribe Descurainieae"

Al-Shehbaz

Pl. Syst. Evol. 259: 111. 2006.

Treatment appears in FNA Volume 7. Treatment on page 517.
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Latest revision as of 11:28, 30 July 2020

Annuals or perennials [shrubs]; glandular or eglandular (glands unicellular papillae). Trichomes stalked, dendritic or forked, sometimes simple, rarely absent. Cauline leaves usually petiolate, sometimes sessile; blade base not auriculate, margins usually pinnatisect or dentate, sometimes entire. Racemes ebracteate or bracteate, often elongated in fruit. Flowers actinomorphic; sepals erect, ascending, spreading, or reflexed, lateral pair not saccate basally; petals usually yellow, sometimes white [pink or purple], claw usually present, sometimes absent, often obscure, obsolete, or distinct; filaments unappendaged, not winged; pollen 3-colpate. Fruits silicles or siliques, dehiscent, unsegmented, terete or angustiseptate; ovules 4–100 [–numerous] per ovary; style usually distinct, sometimes obsolete or absent; stigma entire. Seeds usually biseriate or uniseriate (rarely 4-seriate in Tropidocarpum); cotyledons usually incumbent, rarely accumbent.

Distribution

North America, Mexico, South America, Europe, Asia, n Africa, Atlantic Islands (Canary Islands)

Discussion

Genera 6, species ca. 60 (3 genera, 18 species in the flora).

Selected References

None.

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

Ihsan A. Al-Shehbaz +
Al-Shehbaz +
appendaged +  and unappendaged +
not auriculate +
dissected +, repand +, sinuate +, crenate +  and dentate +
much smaller +  and reduced +
urceolate +, campanulate +  and tubular +
branched +  and simple +
sessile +  and petiolate +
well-developed +
distinct +
obsolete +  and obscure +
not +  and differentiated +
emarginate +  and entire +
North America +, Mexico +, South America +, Europe +, Asia +, n Africa +  and Atlantic Islands (Canary Islands) +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
angustiseptate +  and terete +
compound +, pinnately +, trifoliolate +  and simple +
alternate +, not +  and rosulate +
basal +  and cauline +
connate +  and distinct +
decurrent +
entire +, dentate +  and pinnatisect +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
white +  and yellow +
rudimentary +
cruciform +
trinucleate +  and 3(-11)-colpate +
Pl. Syst. Evol. +
bracteate;ebracteate +
flattened +  and rounded +
margined +, not +  and winged +
uniseriate +  and biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
ovate +, globose +, oblong +, ovoid +  and flattened +
persistent +  and caducous +
distinct +
reflexed +, spreading +, ascending +  and erect +
perforated +  and complete +
reduced +
angustiseptate +  and terete +
angustiseptate +  and terete +
tetradynamous +
unbranched +  and branched +
procumbent +  and decumbent +
descending +, ascending +  and erect +
2-lobed +, entire +, conical +  and capitate +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
Cruciferae +
Brassicaceae tribe Descurainieae +
Brassicaceae +
simple +, dendritic +  and stalked +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
eglandular +  and glandular +
perennial +  and annual +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +