614 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
KEY TO THE SPECIES. 
Racemes 10 to 20 cm. long; staminate flowers large, not punctate- 
glandular... 2... ieee nec eee eee cece eeee 1. E. confusus. 
Racemes shorter, mostly less than 10 cm. long; staminate flowers 
smaller, conspicuously punctate-glandular...................-- 2. EB. wrightii. 
1. Echinopepon confusus Rose, Contr. U. S. Nat. Herb. 5: 115. 1897. 
Tyre LocaLity: Pinos Altos Mountains, New Mexico. Type collected by Greene. 
Rance: Mountains of southwestern New Mexico. 
New Mexico: Copper Mines. 
2. Echinopepon wrightii (A. Gray) 8. Wats. Bull. Torrey Club 18: 158. 1887. 
Elaterium wrightit A. Gray, Pl. Wright. 2: 61. 1853. 
Echinocystis wrightti Cogn. Mém. Acad. Sci. Belg. 28: 88. 1878. 
TyPE Locauity: Mountains near Guadalupe Pass, New Mexico. Type collected by 
Wright (no. 1090). 
RanGeE: Southern New Mexico and Arizona and adjacent Mexico. 
New Mexico: Guadalupe Pass. 
3. SICYOS L. ONE-SEEDED BUR CUCUMBER. 
Slender climbing vines with lobed leaves and branched tendrils; flowers moncecious, 
the staminate in racemes or corymbs, the hypanthium broadly campanulate or nearly 
flat, the corolla whitish or pale yellow, rotate, 5-lobed; stamens with their filaments 
united into a column, the anthers 2 to 5, distinct or united; pistillate flowers usually 
clustered at the end of a peduncle arising from the same node as the longer stami- 
nate peduncle; ovary 1-celled, bristly, glandular, or glabrous; ovule solitary, pendu- 
lous; fruit not inflated, thin-walled, indehiscent. 
KEY TO THE SPECIES. 
Fruit glabrous. ............--...-.+.--- wee eee eee eee eee eee eee 1. 8. glaber. 
Fruit hispid. 
Lobes of the leaves triangular, attenuate, the basal sinus 
usually broad and open ............2--.0.00 cece eee 2. S. parviflorus. 
Lobes of the leavesrounded, obtuse, the sinus usually closed. 3. S. ampelophyllus. 
1. Sicyos glaber Wooton, Bull. Torrey Club 25: 310. 1898. 
TYPE LOCALITY: Organ Mountains, south of San Augustine Ranch, New Mexico. 
Type collected by Wooton (no. 606), 
Rance: Organ Mountains of New Mexico, in the Upper Sonoran Zone. 
2. Sicyos parviflorus Willd. Sp. Pl. 4: 626. 1805. 
Tyre LocaLity: Mexico. 
Rance: Western Texas and southern Arizona to Mexico. 
New Mexico: Fort Bayard; Teel; White Mountains; Gray. Canyons, in the Up- 
per Sonoran and Transition zones 
3. Sicyos ampelophyllus Woot. & Standl. Bull. Torrey Club 86: 111. 1909. 
Type Locauity: Kingston, Sierra County, New Mexico. Type collected by Met- 
calfe (no, 1195). 
Rance: Southwestern New Mexico and adjacent Arizona. 
New Mexico: Kingston; Fort Bayard; Burro Mountains; Sapello Creek; Gila; Santa 
Rita. 
4. IBERVILLEA Greene, 
Climbing herbaceous vines from thickened roots; leaves deeply 3 to 5-lobed; flowers 
small, dicecious, the staminate ones in racemes, the pistillate ones solitary in the 
axils; hypanthium cylindric or cylindric-campanulate; corolla salverform, yellow; 
