WOOTON AND STANDLEY FLORA OF NEW MEXICO. 225 



KEY TO THE SPECIES. 



Perianth 10 mm. long or less, with scarcely any tube; leaves 



broadly ovate 1 . S. chenopodioides. 



Flowers 15 mm. long or more, with a conspicuous tube; leaves 

 ovate or lanceolate. 



Leaves lanceolate, thick and fleshy 2. S. lanceolatus. 



Leaves ovate, not fleshy 3. -S". diffusus. 



1. Selinocarpus chenopodioides A. Gray, Amer. Joum. Sci. II. 15: 262. 1853. 

 Type locality: "Valleys from Providence Creek to the Rio Grande," Texas. 

 Range: Western Texas to southern Arizona and southward. 



New Mexico: Socorro; Albuquerque; above Rincon; Lordsburg; Mesilla Valley; 

 mesa west of Organ Mountains; plains south of the '^Tiite Sands; Alamogordo. Dry 

 mesas and hills, in the Lower Sonoran Zone. 



2. Selinocarpus lanceolatus Wooton, Bull. Torrey Club 25: 304. 1898. 



Type locality: South of the White Sands, New Mexico. Type collected by 

 Wooton (no. 389). 



Range: New Mexico. 



New Mexico: El Rito; near Suwanee; White Sands. Strongly alkaline soil, 

 plains, in the Lower Sonoran Zone. 



3. Selinocarpus diffusus A. Gray, Amer. Joum. Sci. II. 15: 262. 1853. 



Type locality: "Rocky hills and valleys from the Pecos to the Limpio," Texas. 

 Range : Western Texas to New Mexico. 



New Mexico: Acoma; Socorro; south of Carrizozo; Delaware Creek; Turneys Ranch, 

 Dona Ana County. Dry hills, in the Lower Sonoran Zone. 



10. CYPHOMERIS Standley. 



Slender erect perennial herb, woody at the base; leaves thick and fleshy, glaucous, 

 ovate or triangular, entire, petiolate; flowers in bracted racemes; perianth red, funnel- 

 form, with a short narrow tube expanding gradually into a broad limb; fruit gibbous, 

 glaucous, 10-ribbed. 



1. Cyphomeris gypsophiloides (Mart. & Gal.) Standley, Contr. U. S. Nat. Herb. 

 13: 428. 1911. 



Lindenia gypsophiloides Mart. & Gal. Bull. Acad. Sci. Brux. 10^: 358. 1843. 



Boerhaavia gibbosa Pavon; Choisy in DC. Prodr. 13^: 457. 1849. 



Boerhaavia gypsophiloides Coulter, Contr. U. S. Nat. Herb. 2: 354. 1894. 



Type locality: "Dans les plaines a mimosees et a cactees de Tehuacan de las Gra- 

 nadas, d environ 5,000 pieds," Mexico. 



Range: New Mexico and western Texas to Mexico. 



New Mexico: Organ Mountains; La Luz Canyon; Carlsbad. Rocky canyons, 

 in the Upper Sonoran Zone. 



11. ACLEISANTHES A. Gray. 



Low perennial from a woody base; leaves opposite, thick and fleshy, petiolate, 

 long-attenuate at the apex; flowers axillary or terminal, mostly solitary; involucre 

 of 2 or 3 small bracts; perianth white, with a very long slender tube and a broad limb; 

 stamens 2 to 5, unequal, often exserted; fruit narrowly ellipsoid, 5-angled or 5-ribbed. 



1. Acleisanthes longiflora A. Gray, Amer. Joum. Sci. II. 15: 261. 1853. 



Type locality: Valley of the Limpio, Texas. 



Range: Western Texas to southeastern New Mexico, southern California, and south- 

 ward. 



New Mexico: Delaware Creek; mouth of Dark Canyon, Guadalupe Mountains. 

 Dry hills, in the Lower Sonoran Zone. 

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