WOOTON AND STANDLEY FLORA OF NEW MEXICO. 229 



2. Mollugo verticillata L. Sp. PI. 89. 1753. Carpetweed. 



Type locality: "Habitat in Africa, Virginia." 

 Range: Throughout most of North America; also in the Old World. 

 New Mexico: Tierra Blanca; Mangas Springs; San Luis Mountains; Organ Moun- 

 tains. Waste and cultivated ground. 



2. SESXJVIUM L. Sea purslane. 



Fleshy herb with prostrate stems; leaves linear to oblong-lanceolate, fleshy, glau- 

 cous; calyx 5-parted, purplish inside; stamens 5 to 60; styles 3 to 5. 



1. Sesuvium sessile Pers. Syn. PI. 2: 39. 1807. 



Type locality: Not stated. 



Range: Kansas and California, southward to tropical America.. 



New Mexico: Rio Grande Valley, from Socorro southward. In alkaline soil, in 

 the Lower Sonoran Zone. 



3. TBI ANTHEM A L. 



Annual with ascending stems; leaves round-ob ovate, somewhat fleshy, bright green; 

 calyx 5-parted, colored within; stamens 6 to 10; style 1. 



1. Trianthema portulacastrum L. Sp. PI. 223. 1753. 



Trianthema monogyna L. Mant. PL 1: 69. 1767. 



Type locality: " Habitat in Jamaica, Curassao." 



Range: P'lorida to Texas and Lower California, and southward; also in the West 

 Indies. 



New Mexico: Mesilla Valley; Alamogordo. In sandy soil, in the Lower Sonoran 

 Zone. 



An inconspicuous herb, found on dry sandy plains and sometimes in cultivated 

 fields in the extreme southern part of the State. Often after the summer rains the 

 plants come up so thickly as completely to cover the ground. 



48. POETULACACEAE. Purslane Family. 



Annual or perennial herbs, sometimes woody at the base; leaves fleshy; flowers reg- 

 ular, asymmetrical, the sepals fewer than the petals; stamens opposite the petals when 

 of the same number, often indefinite; sepals 2; petals 5 or sometimes none; stamens 

 usually 5 to 20; styles 2 to 8; pod 1-celled. 



KEY TO the genera. 



Ovary partly inferior; capsule circumscissile 1. Portulaca (p. 230). 



Ovary superior, capsules various. 



Plants woody at the base or throughout; capsules with 



a 6-valved endocarp 2. Talinopsis (p. 230). 



Plants herbaceous, rarely woody near the base; cap- 

 sules without endocarp. 



Sepals deciduous 3. Talinum (p. 231). 



Sepals persistent. 



Capsule circumscissile near the base 6. Oreobroma (p. 233). 



Capsule opening by 3 valves at the apex. 



Leaves mostly basal; roots fleshy; plants 



not stoloniferous. 4. Claytonia (p. 233). 



Leaves scattered along the stems; roots 

 slender, not fleshy; plants stolonif- 

 erous 5. Crunocallis (p. 233). 



