139i. Dalea carthagenensis (Jacquin) Macbride var. pilocarpa (Rusby) Barneby

(Plate CXXVII)

Very close to the glabrous phases of var. carthagenensis; leaflets of the drought- deciduous primary leaves little known, apparently 7-9 (11), relatively small, 3-6 mm long; spikes in early anthesis subcapitate, ± elongating, the densely villosulous axis becoming 7-25 mm long; bracts 3.7-6.5 mm long; calyx 5.8-6.5 mm long, the tube 2.2-2.5 mm, the intercostal glands relatively large, prominent, livid, the dorsal tooth 3.3-4.3 mm long; keel 5.4-6 mm long, the claws 1.8-2.3 mm, the blades 3.7-4 mm long, 2-2.4 mm wide; androecium 5.8-6.5 mm long. — Collections: 4 (o).

Arid rocky or brushy hillsides, river-terraces, and washes, seeding (or carried) down into sandy river-beds, 750-2600 m, known only from the e. slope of Cordillera Real in Dept. La Paz, Bolivia. — Flowering April to July.

Dalea carthagenensis (Jacqu.) Macbr. var. pilocarpa (Rusby) Barneby stat. nov., based on D. pilocarpa (with hairy pod) Rusby, Mem. N. Y. Bot. Gard. 7: 261. 1927. — "Espia, 3500 feet, O. E. White, July 25, 1961 (no. 609).-Material: La Paz. Larecaja: Sorata, near San Pedro, Mandon 701 (F, MICH, NY, US, W). Sud Yungas: Espia, typus; Cardenas 4361 (US). Near Calisaya on Rio Bopi, Krukoff 10,038 (F, NY, US).

Hardly distinct from var. carthagenensis, but the keel-petals slightly smaller and the leaflets of primary leaves slightly fewer. It is less like var. brevis, which extends south in Peru to Ayacucho, but may be derived from that source, for genuine var. carthagenensis is essentially Caribbean, not known from the southern hemisphere. The small known range of var. pilocarpa lies 600- 700 km to the southeast of the southern limits of var. brevis and var. trichocalyx in Ayacucho and Huancavelica in Peru.