Difference between revisions of "Parthenice"
Smithsonian Contr. Knowl. 5(6): 85. 1853.
FNA>Volume Importer |
imported>Volume Importer |
||
| (One intermediate revision by the same user not shown) | |||
| Line 47: | Line 47: | ||
|publication year=1853 | |publication year=1853 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_37.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | ||
Latest revision as of 20:11, 5 November 2020
Annuals, 20–200 cm. Stems erect. Leaves cauline; alternate; petiolate; blades (3-nerved) deltate to ovate, margins entire or toothed, faces usually softly pubescent, sometimes rough-hairy. Heads obscurely radiate or disciform, borne in loose, paniculiform arrays. Involucres hemispheric, 3–5 mm. Phyllaries persistent (outer) or falling, 13, distinct, outer 5 herbaceous (becoming reflexed), inner 6–8 membranous (each becoming cupped around a cypsela). Receptacles convex; paleae of 2 kinds: peripheral purplish-mottled, becoming somewhat fleshy and arcuate-clavate, shed together in pairs with each cypsela; inner 0 or narrowly conic, persistent. Ray florets 6–8; corollas yellowish (minute), glandular. Disc florets 10–25+, functionally staminate; corollas yellowish, funnelform, distally glandular and hairy (anthers ± connate). Cypselae (ray) strongly obcompressed to obflattened, obovate, tuberculate, shed with 2 adjacent, ± fleshy paleae; pappi 0 or rudimentary. x = 18.
Distribution
Ariz., nw Mexico.
Discussion
Species 1.