Callirhoe Nutt.
Contenido
Descripción
Annual or perennial herbs or sometimes subshrubs, glabrate, stellate-pubescent, or hispid, erect or procumbent, the perennials often with a fleshy rootstock. Leaves long-petiolate, the blades orbicular in outline (and more or less palmately dissected, sometimes secondarily so) or triangular and crenate, lacking foliar nectaries; stipules lanceolate to broadly auriculate. Flowers solitary in the leaf axils, in erect species often aggregated into terminal inflorescences; pedicels usually greatly exceeding the subtending leaves; involucel present or absent, the bracts (when present) 3, linear to spatulate; calyx deeply 5-lobed, usually costate; petals showy, often distally erose or fimbriate, deep red or burgundy (in ours) to pink or almost white; androecium included, yellowish, antheriferous at apex; styles 10-28, the stigmatic zone introrsely decurrent. Fruits schizocarpic, oblate; mericarps 10-28, horseshoe-shaped or subreniform, laterally reticulate and dorsally smooth or rugose, sometimes beaked, indehiscent, glabrous or strigose; seeds solitary, glabrous. Base chromosome numbers: x = 14, 15.A
Discusión taxonómica
Callirhoe, a genus of temperate North America, includes about ten species, principally from the Great Plains but extending from Wisconsin to Texas and northeastern Mexico. Two varieties of C. involucrata occur in Mexico, in Coahuila and Nuevo León.
Graustein (1967, p. 423, note 14) states that Callirhoé was actually published shortly after 5 March 1822 (although the publication was dated 1821) but nevertheless prior to Nuttallia Dick ex Barton (1822), over which it thus has priority.A
Graustein (1967, p. 423, note 14) states that Callirhoé was actually published shortly after 5 March 1822 (although the publication was dated 1821) but nevertheless prior to Nuttallia Dick ex Barton (1822), over which it thus has priority.A