230 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. PORTULACA L. PURSLANE. 
Fleshy annuals or perennials with terete or flattened leaves; calyx 2-cleft, the tube 
cohering with the ovary; petals 5, rarely 6, fugacious; stamens 7 to 20; style 3 to 8- 
parted; pod 1-celled, many-seeded, the upper part separating as a lid. 
KEY TO THE SPECIES. 
Leaves terete, hairy in the axils. 
Petals carmine to purple, 2 to 4 mm. long; seeds blackish... 1. P. pilosa. 
Petals yellow or copper-colored; seeds black or red. 
Petals 6 to 10 mm. long; seeds blackish..........-....--- 2. P. suffrutcscens. 
Petals about 2 mm. long; seeds red..............-------- 3. P. parvula. 
Leaves flat, not hairy in the axils. 
Petals acute; capsule with a crownlike border near the mouth. 4. P. lanceolata. 
Petals notched; capsule without a crownlike border. 
Sepals acute; styles 5 to 7; seeds granulate............. 5. P. oleracea. 
Sepals obtuse; styles 3 or 4; seeds sharply tuberculate.. 6. P. retusa. 
1. Portulaca pilosa L. Sp. Pl. 445. 1753. 
TypE Loca.itry: ‘“‘ Habitat in America meridionali.”’ 
RanGeE: Florida to Missouri and California and southward. 
New Mexico: Tortugas Mountain. Sandy soil, in the Lower Sonoran Zone. 
2. Portulaca suffrutescens Engelm. Bot. Gaz. 6: 236. 1881. 
TyPE Locauity: Western New Mexico at the Copper Mines. Type collected by 
Wright (no. 874). 
RanGeE: Western Texas to Arizona and southward. 
New Mexico: Santa Rita; Telegraph Mountains; Mangas Springs; Kingston; Tor- 
tugas Mountain; Organ Mountains. Dry hills, in the Lower Sonoran Zone. 
3. Portulaca parvula A. Gray, Proc. Amer. Acad. 22: 274. 1887. 
Type Locauity: ‘‘On the plains of W. Texas and New Mexico, and in Mexico.”’ 
Rance: Western Texas to southern Arizona and southward. 
New Mexico: Mesilla Valley (Wooton). Lower Sonoran Zone. 
4. Portulaca lanceolata Engelm. Bost. Journ. Nat. Hist. 6: 154. 1850. 
TYPE LocaLity: ‘‘Granite region of the Liano, in Western Texas.”’ 
Rance: Texas to Arizona. 
New Mexico: Berendo Creek; north of Deming. Lower Sonoran Zone. 
5. Portulaca oleracea L. Sp. Pl. 445. 1753. COMMON PURSLANE. 
TYPE LocaLity: ‘‘Habitat in Europa australi, India, Insula Ascensionis, America.” 
Rance: Common in cultivated ground throughout most of North America, extend- 
ing into South America; in the Old World. 
New Mexico: Cultivated and waste ground throughout the State. 
6. Portulaca retusa Engelm. Bost. Journ. Nat. Hist. 6: 154. 1850. 
Tyre Loca.iry: ‘‘Granite region of the Liano in western Texas.’’ 
Rance: Arkansas to Texas and Arizona. 
New Mexico: Rio Alamosa; Gilmores Ranch; Tortugas Mountain. Sandy soil, 
Lower Sonoran to Transition Zone. 
2. TALINOPSIS A. Gray. 
A low shrub, 60 cm. high or less, with slender branches; leaves linear, nearly terete; 
flowers few, purple, in a terminal cyme; fruit about 24 mm. long, covered by the 
persistent calyx. 
