Mimosa quadrivalvis var. hystricina

Title

Mimosa quadrivalvis var. hystricina

Authors

Rupert C. Barneby

Scientific Name

Mimosa quadrivalvis var. hystricina (Small ex Britton & Rose) Barneby

Description

190k. Mimosa quadrivalvis var. hystricina (Small) Barneby, comb. nov. Leptoglottis hystricina Small ex Britton & Rose, N. Amer. Fl. 23(3): 139. 1928.—"Type from Hemstead [Waller Co.], Texas, May 1, 1872, Elihu Hall 170. ’’ — Holotypus, NY!; isotypus, K! — Schrankia hystricina (Small) Standley, Publ. Field Columbian Mus. Nat. Hist., Bot. Ser. 8: 13. 1930. S. nuttallii var. hystricina (Small) Isely, Castanea 51: 205. 1986.

Except for potentially more vigorous growth and longer peduncles essentially like var. nuttallii, the lf-formula and lft-venation indistinguishable, but the pod at once shorter and broader, very densely aculeate; peduncles mostly 5—12 cm but said to attain 20 cm in fruit; pods 20-45 mm long, without armament 4—5 mm diam., bluntly tetragonal or moderately compressed laterally, the replum 2-2.5 mm and valves 2.5-3.5 mm wide, all armed with erect, crowded, basally confluent aculei to 2.5-5.5 mm.

In moist sandy prairies and open pinewoods of the Gulf coastal plain in e. Texas and w. Louisiana, in Texas randomly inland an unknown distance (Isely, 1973, map 45), the limit uncertain due to difficulty in distinguishing flowering plants from vicariant var. nuttallii.— Fl. IV-VII.