Monographs Details: Dalea nana Torr. ex A.Gray var. nana
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
Synonyms:Parosela nana (Torr. ex A.Gray) A.Heller
Description:Species Description - Always diffuse or prostrate, the steins sometimes simple and monocephalous, more often branched; leaflets 5 in nearly all leaves, mostly obtuse or subobtuse, varying from densely silky-pilose to glabrescent above (but upper surface not verdigris- green when dried); calyx-teeth mostly 2.2-4.2 mm, keel-blades 3-4.8 mm long; n = 7 II (Mosquin).— Collections: 104 (viii).

Distribution and Ecology - Sandy plains, dunes, stream-beds, sometimes becoming weedy along roads and railroads, generally avoiding rocky subsoils and prevailingly calcifuge, 10-1500 m (25-5000 ft), locally abundant and widespread over the Gulf Coastal Plain of s. Texas and adjoining Tamaulipas and Nuevo Leon, absent or nearly so from Edwards Plateau and calcareous caprock of trans-Pecos, reappearing, but more scattered, on the plains of w. and panhandle Texas, n. through panhandle Oklahoma to the valleys of the Canadian and Arkansas rivers in s.-w. Kansas and s.-e. Colorado, w. through the middle Pecos valley to the Rio Grande (upstream to Albuquerque), and s. and s.-w. to Rio Conchos in centr. Chihuahua and around the s. end of the Mogollon massif in New Mexico into s.-e. Arizona; apparently absent from Coahuila, entering the Big Bend country only at its north margin and along the bed of Rio Grande, on the limestones of n. Mexico and w. Texas largely replaced by var. canescens. — Flowering April to September. — Representative: Colorado: Fremont (from La Junta) in 1845 (NY). Kansas: Rydberg & Imler 779, 975 (NY). Oklahoma: Waterfall 9052 (NY, OKLA); J. Engleman 969 (OKLA). New Mexico: R. T. Clausen 4617 (NY); Maguire 11,404 (NY, UC); Barneby 2479, 14,480 (NY). Arizona: Rusby 564 (NY, UC); Maguire 11,060 (NY); Thornber 4350 (UC). Texas: T. & L. Mosquin 5665 (NY); York & Rogers 17 (ENCB, OKLA); Ripley & Barneby 11,215 (NY), 14,508 (CAS, NY, US); Tracy 9081 (NY, WIS); R. Runyon 1398 (US). Chihuahua: Shreve 9061 (UC); A. R. Moldenke 2082 (RENNER). Nuevo Leon: Ripley & Barneby 14,784 (CAS, NY). Tamaulipas: Barkley 14,599 (F, NY, UC).

Discussion:

(Plate CXXXVI)

Racial differentiation in var. nana is apparently still active, expressed in small size- differences in the spikes and in length of the bracts, calyx-teeth, and androecia. Material from the upper Arkansas (nomenclaturally typical) and thence southwest to Rio Grande and on, sporadically, into extreme southeast Arizona, has relatively thick spikes (10-13 mm diam), long bracts (3.5-5.5 mm) and calyx-teeth (2.6-4.2 mm), and long androecia (mostly 8-10 mm). The populations on the Coastal Plain in southern Texas and adjoining Mexico, extending into central Texas, have narrower spikes (mostly 7-9 mm diam), and correspondingly short bracts (2.5-4, rarely 4.5 mm), calyx-teeth (2.2-3.4, rarely 3.8 mm), and androecia (6-8 mm). These differences represent, however, trends rather than accomplished modifications, coinciding for the most part with different life-zones, but are not yet fully stabilized.

Distribution:Texas United States of America North America| Tamaulipas Mexico North America| Nuevo León Mexico North America| Oklahoma United States of America North America| Canada North America| Arkansas United States of America North America| Kansas United States of America North America| Colorado United States of America North America| Chihuahua Mexico North America|

Multimedia:
Objects:Specimen - 01270390, R. T. Clausen 4617, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, New Mexico, Bernalillo Co.
Specimen - 01270393, J. C. Frémont s.n., Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Colorado
Specimen - 01270411, B. Maguire 11404, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, New Mexico, Grant Co.
Specimen - 01270421, R. T. Clausen 4617, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, New Mexico, Bernalillo Co.
Specimen - 01270427, B. Maguire 11060, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Arizona
Specimen - 01270395, R. T. Clausen 4617, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, New Mexico, Bernalillo Co.
Specimen - 01270412, U. T. Waterfall 9052, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Oklahoma, Cimarron Co.
Specimen - 01305026, F. A. Barkley 14599B, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, Mexico, Tamaulipas
Specimen - 01074253, R. C. Barneby 14480, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, New Mexico, Lea Co.
Specimen - 01305025, H. D. D. Ripley 14784, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, Mexico, Nuevo León
Specimen - 01074254, R. C. Barneby 14508, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Texas, La Salle Co.
Specimen - 01270409, P. A. Rydberg 779, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Kansas, Clark Co.
Specimen - 01270410, P. A. Rydberg 975, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Kansas, Finney Co.
Specimen - 01270388, S. M. Tracy 9081, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Texas, Kleberg Co.
Specimen - 01270428, R. C. Barneby 2479, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, New Mexico, Luna Co.
Specimen - 01270400, H. H. Rusby 564, Dalea nana Torr. ex A.Gray var. nana, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Arizona
Specimen - 01241240, R. L. McGregor 17332, Dalea multiflora (Nutt.) Shinners, Fabaceae (152.0), Magnoliophyta; North America, United States of America, Kansas, Douglas Co.