Monographs Details: Marina capensis Barneby
Authors:Rupert C. Barneby
Authority: Barneby, Rupert C. 1977. Daleae Imagines, an illustrated revision of Errazurizia Philippi, Psorothamnus Rydberg, Marine Liebmann, and Dalea Lucanus emen. Barneby, including all species of Leguminosae tribe Amorpheae Borissova ever referred to Dalea. Mem. New York Bot. Gard. 27: 1-892.
Description:Species Description - Herbaceous, with several slender but stiff, purplish, procumbent stems arising close together from near the crown of the slender, apparently annual taproot, simple or forking distally, up to 3.5 dm long, glabrous and gland-tuberculate throughout, glaucescent toward the base, the foliage (especially the leaf-rachis) thinly pilosulous with spreading-incurved hairs up to 0.25-0.35 mm long, the leaflets thick-textured, hairy both sides or only beneath, gland-dotted dorsally; leaf-spurs 0.4-1 mm long, charged at apex on either side with a livid prickle-gland; stipules subulate, 0.6-1.5 mm long, livid, often gland-spurred on margins; intrapetiolular gland 1, prominent, prickle shaped; post-petiolular glands similar, 2; main cauline leaves 2.5-5 cm long, shortly petioled, with slender, very narrowly margined rachis and 11-18 pairs of slender- petiolulate, oblong-obovate, emarginate, flat leaflets 1.5-2.5 mm long, charged dorsally at tip with a large gland, the upper leaves shorter, with only 9-12 pairs of smaller leaflets; peduncles borne above middle of stem, mostly leaf-opposed, 0.5-3.5 cm long; racemes loosely and narrowly many-flowered, the flowers 2-ranked when pressed, without petals 5-6 mm diam, the incurved-ascending, glabrous axis becoming 2.5-4 cm long; bracts deciduous, narrowly ovate-acuminate, early becoming papery and brownish, 1.7-2.5 mm long, thinly pilosulous distally; pedicels 0.4-0.5 mm long, the apical glands prominent; calyx ± 2.8 mm long, pilosulous along the ribs and about the flat, herbaceous teeth with incurved hairs up to 0.2-0.25 mm long, the tube 1.2 mm long, the ribs prominent, obtuse, the narrow, deeply recessed intervals charged with one row of 4-5 small, transparent glands, the teeth unequal, the dorsal one lanceolate, ± 1.6 mm, the shorter and proportionately broader ventral pair shortest, united slightly higher behind the banner; petals particolored, the banner yellow-eyed and blue-margined, the rest divided lengthwise into blue inner and whitish (or when dry yellowish) outer bands of nearly equal width, all gland-sprinkled, the inner ones elevated not more than ± 1 mm above the hypanthium; banner 2.4-2.6 mm long, the claw 1.2-1.3 mm, the subquadrate-reniform blade 1.5-1.6 mm long, 2.2-2.4 mm wide; wings 3.2 mm long, the claw 0.7 mm, the blade 2.7 mm long, 1.7 mm wide; keel ± 4.5 mm long, the claw 0.9 mm, the blade 3.7 mm long, 2.3 mm wide; androecium 10- merous, ± 4.5 mm long, the longest filament free for 1.5 mm, the anthers bluish, gland- tipped, 0.6-0.7 mm long; ovary glabrous.— Collections: 1 (o).
Distribution - Gravelly hillsides below 100 m, known only from the type-locality near Todos Santos, on the Pacific slope of Baja California Sur immediately below the Tropic of Cancer. — Flowering in December and January.
I am reluctant to describe further entities in the complex group related to M. divaricata, already numerous in the Cape region, but I cannot assimilate the typus of M. capensis into any of the several similar, sympatric or nearly sympatric forms. In general the plant most nearly resembles M. divaricata itself. The glaucescent, warty stems, the thin, pilosulous pubescence of the foliage, and the coloration of the flower are essentially the same, but the root is annual, the flower substantially smaller, and the leaflets of the main cauline leaves are 12-18 not 7-11 (12) pairs. Many individual plants of M. parryi flower the first season and some of them may have flowers nearly as small as that of M capensis; these, however, have relatively few leaflets, a pilosulous pod, and occur far northward on the Peninsula. Three diffuse, annual, small-flowered species of Marina are found in approximately the same latitudes as M. capensis, but only one of them, M. peninsularis, has prominently warty stems. This, too, has fewer leaflets (mostly 4-7, exceptionally 10 pairs), stramineous, pliant, pilosulous stems, shorter racemes, and pilosulous ovary and pod. Another close relative is M. parryi native along the foothills of the Sierra Madre in Sinaloa and southern Sonora, not yet found in Baja California. It is like M. capensis in having a small flower and glabrous ovary, but once again differs in fewer leaflets, in being nearly glabrous below the spikes, in the perennial root, and in the ultimately shrubby habit of growth.
Baja California Sur Mexico North America
| Mexico North America