WOOTOF AND STANDLEY FLORA OF NEW MEXICO. 497 



3. MENODORA Humb. & Bonpl. 



Low herbs, suffrutescent at the base, with simple entire leaves and bright yellow 

 flowers; calyx persistent, with a short tube and 5 to 15 narrow lobes; corolla rotate 

 or short-campanulate, with 5 or 6 lobes; stamens 2 or 3, exserted, on slender filiform 

 filaments; ovary 2-celled; stigma capitate; fruit didymous, circumscissile near the 

 middle. 



KEY TO THE SPECIES. 



Plants glabrous throughout 1. M. laevis. 



Plants scabrous-puberulent, rough to the touch 2. M. scabra. 



1. Menodora laevis Woot. & Standi. Contr.U. S. Nat. Herb. 16: 158. 1913. 



Type locality: Organ Mountains, New Mexico. Type collected by G. R. Vasey 

 in 1881. 



Range: Low mountains of southern New Mexico. 



New Mexico: Organ Mountains; Duck Creek Flats; La Luz Canyon. Upper 

 Sonoran Zone. 



2. Menodora scabra A. Gray, Amer. Joum. Sci. II. 14: 43. 1852. 

 Type locality: New Mexico. Type collected by Wislizenus in 1846. 

 Range: Western Texas to Arizona and southward. 



New Mexico: Santa Fe; Las Vegas; Zuni Reservation; Socorro; Pines Altos; 

 Albuquerque; Silver City; Rincon; Tortugas Mountain; Organ Mountains. Dry hills, 

 in the Upper and Lower Sonoran zones. 



4. MENODOROPSIS Small. 



Low suffrutescent herb, about 30 cm. high, with tufted stems, simple, mostly 

 opposite leaves, and conspicuous bright yellow flowers with long-sah-erform corollas; 

 calyx pediceled, ribbed, 10-lobed; stamens included, the anthers nearly sessile on 

 the throat of the corolla; capsule didymous, circumscissile near the middle. 



1. Menodoropsis longiflora (A. Gray) Small, Fl. Southeast. U. S. 917. 1903. 

 Menodora longijlora A. Gray, Amer. Joum. Sci. II. 14: 45. 1852. 

 Type locality: Texas. 



Range: Western Texas to southeastern New Mexico. 

 New Mexico: Queen (Wooton). Dry hills, in the Upper Sonoran Zone. 



Order 43. GENTIANALES. 



113. GENTIANACEAE. Gentian Family. 



Smooth herbs with bitter colorless juice; leaves opposite, rarely alternate or ver- 

 ticillate, exstipulate; flowers perfect, regular; calyx 4 to 12-lobed or toothed, often 

 marcescent; corolla gamopetalous, 4 to 12-lobed or toothed; stamens as many as the 

 corolla lobes and alternate with them, epipetalous; ovary superior, 1-celled, rarely 

 2-celled, with parietal placentae or the whole wall ovuliferous; capsule dehiscent 

 through the placentae; seeds numerous. 



KEY to the genera. 



Styles filiform, mostly deciduous; anthers recurved or 

 twisted at maturity. 

 Corolla small, red, rose, or yellowish, the tube 

 surpassing the calyx; anthers spirally 



twisted 1. Centaurium (p. 498). 



52576°— 15 32 



