25a.  Marina greenmaniana (Rose) Barneby var. greenmaniana

Pubescent as given in the key; 2n = 20 (Mosquin). — Collections: 8 (vi).

Open brushy hillsides, in thorn-forest and ascending into thin oak woodland, 1500 -1900 m (± 5000-6330 ft), reportedly up to 2400 m, local (but probably often overlooked), e. end of Balsas Depression in s. Mexico and Puebla (to be expected in Morelos), extending e. in Puebla to the upper margins of the Tehuacan desert and s.-w. through the Mixteca hill-country to the valley of Oaxaca. — Flowering September to January.—Material: Mexico. Tonatico: near Tonatico, Matuda 27,518 (MEXU, NY). Puebla. Izucar de Matamoros: 8 mi. s.-e. of Izucar, Ripley & Barneby 13,695 (CAS, NY). Petlalcingo: 12 mi. s.-e. of Petlalcingo, Ripley & Barneby 13,675 (CAS, K, MEXU, NY, US). Santiago Miahuatlan: 6 mi. n. of Tehuacan, Ripley & Barneby 14,718 (NY). Oaxaca. Nazareno Etla: Las Sedas (typus); Etla to Huitzo, Ripley & Barneby 14,661 (CAS, NY, US); 7 mi. n. of Telixtlahuaca, Ripley & Barneby 14,672 (CAS, DAO, GH, IA, MEXU, MICH, NY, UC, US).

Marina greenmaniana (Rose) Barneby, comb. nov., based on Parosela greenmaniana (Jesse More Greenman, 1867-1951) Rose, Proc. Amer. Acad. 8: 303. 1905. — "Collected by C. G. Pringle on dry soil at Las Sedas, altitude 2400 meters, September 29, 1894 (no. 4928)."-Holotypus, US! isotypi, BR, F, GH, M, MEXU, NY, UC, Z!