Marina neglecta var. neglecta

  • 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.

  • Family

    Fabaceae

  • Scientific Name

    Marina neglecta var. neglecta

  • Type

    based on Dalea neglecta (overlooked) B. L. Robins., Proc. Amer. Acad. 29: 329. 1894. — "Collected at Guanajuato, Mexico, by Prof. Alfred Duges (no. 2576)." — Holotypus, Duges 257 B (not 2576), GH!—Parosela neglecta (B. L. Robins.) Rose, Contrib. U. S. Nat

  • Synonyms

    Dalea neglecta B.L.Rob., Parosela neglecta Parish

  • Description

    Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead in /home/emu/nybgweb/www-dev/htdocs/science-dev/wp-content/themes/nybgscience/lib/VHMonographsDetails.php on line 179

    Species Description - Stems usually numerous from the root-crown, branching from near the base or near the middle, forming leafy clumps often broader than high; raceme mostly 20-50 (rarely up to 70)-flowered, the axis usually 2-6.5 (exceptionally up to 17) cm long; pod puberulent distally; n = 10 (Spellenberg, 1973); 2n = 20; 10 II (Mosquin). — Collections: 26 (x).

    Distribution and Ecology - Stony and grassy roadsides and banks of hedges, colonial and sometimes forming continuous or irregularly interrupted edging to the highway for up to 20 km in length, occurring only rarely and weakly in grazed grassland or in arid scrub, not certainly known from any undisturbed habitat, (300) 1200-2250 m, locally common in three apparently separated areas: grasslands of the Bajio, n. Michoacan to centr. Guanajuato, w. to extreme s. Zacatecas, central and n.-e. Jalisco and Aguas Calientes; arid valleys of centr. Oaxaca, extending n.-w. along the Pan-American Highway into s.-w. Puebla, and (perhaps isolated) along the Acapulco Highway near Chilpancingo, Guerrero; arid gypseous hills at low elevations in Colima. — Flowering from August to December.

  • Discussion

    (Plate XIX)

    The form of var. neglecta common in the grasslands of the Lerma valley between Lago Cuitzeo and Lago Chapala in northern Michoacan has many incurved-ascending stems about 3-7 dm long unless dwarfed by crowding, deep green foliage at first ample but becoming thin as the season advances, and very numerous flowers arranged in dense racemes which seldom surpass six cm in length, even when in fruit. The vivid magenta-purple petals are less fugitive than those of M. scopa; in consequence several successive flowers on a raceme remain open at a time, and the young plant in full anthesis is a colorful sight. In this area, as also in Jalisco arid Guanajuato, the calyx is pectinately ciliolate from the base upward, although a minor variant with glabrous calyx-tube and only puberulent calyx- teeth, suggesting passage to var. elongata, has been collected in central Jalisco (near Esti- pac, Schubert & Souza 1966, NY). The typical form is also abundant here and there along the Pan-American Highway between Oaxaca City and Southern Puebla. In the valley of Oaxaca near Etla I found plants identical in general aspect and growing close together, some with ciliolate, others with quite glabrous calyces. The latter (Ripley & Barneby 14,625a, NY) would key to var. elongata but are interpreted as a second minor variant of var. neglecta. At low elevations near Colima, in gypseous soil at ± 300 m, var. neglecta is represented by yet another variant (Gentry et al. 19,560, US). In this the calyx is typical of var. neglecta but the raceme is loose and up to 70-flowered, its axis reaching in some specimens a length of 17 cm, thereby resembling var. elongata in habit of growth. Probably representing the same taxon, which may deserve formal varietal status, are gigantic plants ("to 6 ft tall, used for brooms") collected on sandy flats behind the beach 10 km s.-w. of Tocoman, Colima (Spellenberg & Dunford2954, NY), which I would have referred to var. elongata except that the calyx is strigulose.

  • Distribution

    Zacatecas Mexico North America| Jalisco Mexico North America| Oaxaca Mexico North America| Puebla Mexico North America| Guerrero Mexico North America| Michoacán Mexico North America| Guanajuato Mexico North America| Colima Mexico North America| Mexico North America|