FLOWERING PLANTS AXD FERNS OF ARIZONA 321 



5. Delphinium geraniifolium Rvdb., Torrey Bot. Club Bui. 26: 583. 



1899. 



Apache, Navajo, and Coconino Counties, 7,000 to 8,200 feet, moun- 

 tain parks, summer and autumn, type from "Charles" (Clark?) 

 Valley (Rusby in 1883). Known only from northern Arizona. 



The plant is of a strict, often simple, habit with flowers densely 

 massed in a turretlike spike. Occasional cream-colored variants may 

 be noted among the usual indigo-blue-flowered plants. The leaves 

 recall Geranium or Paeonia in their distinctive contour and lobation. 



6. Delphinium barbeyi Huth, Herbier Boissier Bui. 1: 335. 1893. 



Delphinium exaltatum var. barbeyi Huth, Delph. North Amer. 

 11. 1892. 



Baldy Peak, White Mountains, Apache County (Goodding 605), 

 apparently scarce, in subalpine parks. Wyoming, Colorado, Utah, 

 and eastern Arizona. 



The lower flowers in the short raceme are subtended by broad leaflike 

 few-parted bracts, the stems usually hollow and succulent. 



7. Delphinium andesicola Ewan, Wash. Acad. Sci. Jour. 29: 476. 



1939. 



Chiricah.ua, Huachuca, and Santa Rita mountains (Cochise and 

 Pima Counties), 5,000 to 8,500 feet, in swales on open yellow pine 

 slopes, summer and autumn, type from Barfoot Park, Chiricahua 

 Mountains (Blumer 136). Known only from southeastern Arizona. 



Most closely related to D. tenuisectum Greene of the Sierra Madre 

 Occidental of Mexico, this larkspur has puberulent dull- or dark-blue 

 hooded sepals, and flowers in an elongate but not dense raceme. 



8. Delphinium sierrae-blancae Wooton, Torrey Bot. Club. Bui. 37: 



38. 1910. 



Mountains about the headwaters of Salt River and along the upper 

 Gila River (Apache, Greenlee, and Graham Counties), 6,500 to 9,500 

 feet, wet creek bottoms, late summer or autumn. New Mexico and 

 eastern Arizona. 



The Arizona form is subsp. amplum Ewan (ibid.), with dark green, 

 more ample and broader leaves than in the typical form of the species. 

 The plants average taller and more leafy in the subspecies, but the 

 flowers and follicles correspond closely with those of the species. 



6. ACONTTUM. Monkshood 



Plants herbaceous, perennial; stems tall, leafy; leaves palmately 

 lobed; flowers in simple or branched racemes, perfect, very irregular; 

 sepals 5, the upper one much the largest, helmet-shaped; petals small, 

 varying in number; stamens numerous; pistils 3 to 5, these in fruit 

 several-seeded, short-beaked follicles. 



Showy plants with a general resemblance to larkspur but different in 

 the structure of the large, normally dark-blue or violet flowers. All 

 parts of the plants contain aconitin and other alkaloids. The Euro- 

 pean monkshood, A. napellus L., is the source of the powerful heart 

 stimulant, aconite. A. columbianum is reputed to be poisonous to 

 livestock. It is stated that the plants are most toxic in the preflower- 

 ing stage. 



