WOOTON AND STANDLEY FLORA OF NEW MEXICO. 531 



2. MARILAUNIDITJM Kuntze. 



Low annual or perennial herbs with pubescent, mostly diffusely branched stems, 

 small simple entire alternate nearly sessile leaves, and solitary axillary flowers; corolla 

 whitish to blue or purple, funnelform, the lobes broad, imbricated in bud; stamens 

 mostly included; ovary 1-celled, sometimes imperfectly 2-celled; styles 2, distinct; 

 capsules oblong to subglobose, 2-valved; seeds numerous, small, rugose. 



KEY TO THE SPECIES. 



Perennial, from a thick woody base 1. M. xylopodum. 



Annuals. 



Corolla not at all or but slightly exceeding the calyx 2. M. angustifolium. 



Corolla much exceeding the calyx. 



Corolla pale blue, 5 mm. long; plants slender, with few 



erect branches 3. M. tenue. 



Corolla deep purple, more than 7 mm. long; plants stout, 

 with very numerous dense spreading branches. 

 Leaves of the inflorescence obovate to broadly ob- 

 long, flat, strongly hispid or hirsute; tube of 



corolla shorter than the calyx 4. M. foliosum. 



Leaves of the inflorescence linear to narrowly ob- 

 long, revolute; tube of corolla exceeding the 

 ca lyx -5. M. hispidum. 



1. Marilaunidium xylopodum Woot. & Standi. Contr. U. S. Nat. Herb. 16; 162. 



1913. 

 Type locality: Crevices of limestone rocks near Queen, New Mexico. Type col- 

 lected by Wooton, July 31, 1909. 

 Range: Southern New Mexico and western Texas. 

 New Mexico: Queen (PTooton). Dry hills. 



2. Marilaunidium angustifolium (A. Gray) Kuntze, Rev. Gen. PI. 2: 384. 1891. 

 Nama dichotomum angustifolium A. Gray, Proc. Amer. Acad. 8: 284. 1870. 

 Conanthus angustifolius Heller, Bull. Torrey Club 24: 479. 1897. 



Type locality: "New Mexico." Type collected by Fendler in 1847, near Santa 

 Fe (no. 644). 



Range: Colorado to New Mexico and western Texas. 



New Mexico: Tunitcha Mountains; Pecos; Santa Fe Canyon; Santa Rita; Mo. 

 goUon Mountains; Organ Mountains; "VMiite and Sacramento mountains. Open 

 slopes, in the Upper Sonoran and Transition zones. 



3. Marilaimidium tenue Woot. & Standi. Contr. U. S. Nat. Herb. 16: 162. 1913. 

 Type locality: Limestone hills 3 miles south of Hillsboro, Sierra County, New 



Mexico. Type collected by Metcalfe (no. 1291). 

 Range: Known only from type locality. 



4. Marilaunidium foliosimi Woot. & Standi. Contr. U. S. Nat. Herb.* 16: 162. 1912. 

 Type locality: On saltgrass flats near Roswell, New Mexico. Type collected by 



Earle (no. 531). 



Range: Southeastern New Mexico. 

 - New Mexico: Roswell; Lake Arthur; Fort Stanton. Dry plains and hills, in the 

 Lower and Upper Sonoran zones. 



5. Marilauniditmi hispidum (A. Gray) Kuntze, Rev. Gen. PI. 2: 434. 1891. 

 Navia hispida A. Gray, Proc. Amer. Acad. 5: 339. 1862. 



Conanthus hispidus Heller, Lull. Torrey Club 24: 479. 1897. 

 Type locality: Not definitely stated. 



