218 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Fruit 10-ribbed; leaves thick 

 and leathery, mostly 

 basal; perianth funnel- 

 form 12. Anulocaulis (p. 226). 



Fruit with 5 or fewer angles; 

 leaves thin, scattered 

 along the stems; peri- 

 anth campanulate 13. Boerhaavia (p. 226). 



^ 1. WEDELEELLA Cockerell. 



Annual or perennial herbs with prostrate stems; leaves opposite, petiolate; invo- 

 lucre of 3 oval sepal-like bracts united at the very base, solitary on axillary pedun- 

 cles; perianths purplish red, rarely white, oblique, 3 in each involucre; fruit leath- 

 ery, winged on each side, smooth on the inner side, with 2 parallel rows of stipitate 

 glands on the outer side, these often concealed by the incurved, entire or toothed 

 wings. 



KEY TO THE SPECIES. 



Annual; stems only slightly pubescent, or glabrous; wings of the 

 fruit not incurved, with numerous slender teeth; leaves ob- 

 long, glaucous beneath, obtuse, somewhat crispate 1. W. glabra. 



Perennials; stems strongly viscid; wings of the fruit incurved; leaves 

 usually ovate, mostly acutish, not glaucous beneath, plane. 



Wings of the fruit toothed 2. W. incarnata. 



Wings of the fruit entire 2a. W. incarnata 



anodonta. 



1. WedeHella glabra (Choisy) Cockerell, Torreya 9: 167. 1909. 



Allionia incarnata glabra Choisy in DC. Prodr. 13^: 435. 1849. 



Wedelia glabra Standley, Contr. U. S. Nat. Herb. 12: 332. 1909. 



Type locality: "Circa Mexicum." 



Range : Arizona to western Texas, south into Mexico. 



New Mexico: Carrizo Mountains; Farmington; Zuni; Pecos; Santa Fe; Albu- 

 querque; Mangas Springs; Mesilla Valley; Gray; south of Roswell. Sandy plains, in 

 the Lower and Upper Sonoran zones. 



2. Wedeliella incarnata (L.) Cockerell, Torreya 9: 167. 1909. 

 Allionia incarnata L. Syst. Nat. ed. 10. 2: 890. 1759. 

 Wedelia incarnata Kuntze, Rev. Gen. PI. 2: 533. 1891. 



Type locality: " Juxta Cumana urbem, in silvis arenosis," Venezuela. 



Range: Colorado to Arizona, western Texas, and Mexico; also in the West Indies 

 and South America. 



New Mexico: Burro Mountains; Rincon; Carrizalillo Mountains; Organ Moun- 

 tains; Mesilla Valley; Alamogordo; Lake Arthur; south of Roswell. Dry hills, in the 

 Lower and Upper Sonoran zones. 



A plant from Highrolls is an albino form. Analogous forms are known in other 

 AUioniaceae. 



2a. Wedeliella incarnata anodonta (Standley) Cockerell, Torreya 9: 167. 1909. 

 • Wedelia incarnata anodonta Standley, Contr. U. S. Nat. Herb. 12: 333. 1909. 



Type locality: Plains of western New Mexico. Type collected by Rusby (no. 

 355). 



Range: New Mexico and Arizona. 



New Mexico: Shiprock; Albuquerque; Valverde. Lower and Upper Sonoran 

 zones. 



