804 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



*2. Antirrhinum kingii S. Wats, in King, Geol. Expl. 40th Par. 5: 

 215. 1871. 

 This plant is not known definitely to occur in Arizona, but the var. 

 watsoni (Vasey and Rose) Munz has been collected in northwestern 

 Sonora. 



3. Antirrhinum cyathiferum Benth., Bot. Voy. Sulph. 40. 1844. 

 Pinal and Yuma Counties, 1,700 feet or lower, usually on stony 



talus slopes, preferring partial shade, January to March. South- 

 western Arizona, northwestern Sonora, and Baja California. 



4. Antirrhinum nuttallianum Benth. in DC, Prodr. 10: 592. 1846. 

 Pinal and Pima Counties, 3,800 feet or lower, canyons, March and 



April. Southwestern Arizona, southern California, and Baja Cali- 

 fornia. 



A form with most of the flowers nearly sessile was collected by 

 L. N. Goodding in the Baboquivari Mountains. 



5. MAURANDYA 



Perennial herbs of diverse habit; stems twining or procumbent; 

 leaves alternate, petioled, the blades coarsely toothed or lobed; corolla 

 bilabiate, with or without a palate; filaments pubescent, often bearing 

 tack-shaped glands; capsule irregularly dehiscent near the apex. 



Key to the species 



1. Plant densely viscid-villous throughout; stems prostrate, matted, stout, very 

 brittle; leaf blades cordate or reniform, wider than long, coarsely several- 

 toothed; calyx lobes triangular-ovate; corolla pale yellow, with a narrow 

 cyiindric tube scarcely expanded at apex, the throat open, without a palate. 



1. M. ACERIFOLIA. 



1. Plant glabrous throughout; stems climbing by the tendrillike petioles and 

 peduncles, slender, not brittle; leaf blades triangular-hastate, often also 

 cordate; calyx lobes narrowly lanceolate; corolla violet purple or carmine 

 (exceptionally white), with a short tube expanded into a wide, campanu- 

 late throat, the latter partly closed by a large hairy palate. 



2. M. ANTIRRHINIFLORA. 



1. Maurandya acerifolia Pennell, Wash. Acad. Sci. Jour. 19: 69. 1929. 

 Eastern Maricopa County, side canyons along Salt River, about 



2,000 feet, shaded rock ledges and cliffs, the stems often hanging, 

 March to May, type from Fish Creek Canyon (Peebles et al. 5246). 

 Known only from southern central Arizona. 



2. Maurandya antirrhiniflora Humb. and Bonpl. in Willd., Hort. 



Berol. pi. 83. 1807. 



Grand Canyon (Coconino County) , and Mohave County to Cochise, 

 Santa Cruz, Pima, and Yuma Counties, 1,500 to 6,000 feet, common 

 on stony slopes usually among shrubs, April to October. Western 

 Texas to southeastern California and southward. 



The showy snapdragonlike flowers make this plant well worth 

 cultivating. It is well suited to growing on trellises. There are 2 

 sharply distinct color forms, lilac or pale violet and rose red. 



6. COLLINSIA'i 



A small annual herb; stems decumbent or erect, widely branched; 

 leaves opposite, the blades oblong to narrowly lanceolate or spatulate; 



41 Reference: Newsom, Vera M. a revision of the genus collinsia. Bot. Gaz. 87: 260-301. 1929. 



