white-villous; follicles oblong, obscurely venulose, 1-1.4 cm. long, with short thin 

 pricklelike cusp; seeds 2.5-3 mm. long, the angles narrowly winged. 



In wet soil of swales and mt. stream bottoms, in Ariz. (Apache, Greenlee, 

 Graham, Cochise, Santa Cruz and Pima cos.), Aug.-Sept. 



Besides typical material, the subsp. ampliim Ewan is found in the more northern 

 area of the distribution, characterized by having a less pubescent stem and 

 shorter, broader ultimate divisions of the leaves. 



3. Delphinium tenuisecfum Greene. 



Rather tall leafy-stemmed virgate perennial from a stout woody vertical root- 

 crown; stems strict, stout, simple, finely puberulent throughout (densely so on 

 rachis), 8-12 dm. tall; leaves up to the raceme, spreading, the lower slender 

 petioles 8-10 cm. long; blades finely dissected, 7-9 cm. wide, the primary divisions 

 indistinct by the approximation of the linear-pectinate narrowly acute ultimate 

 segments, sometimes the divisions of the lowermost blades broader (to 3 mm. wide) 

 and more abruptly acute, all finely puberulent on both surfaces; racemes inter- 

 rupted-spicate; flowers rather large, dark-blue; bracts filiform-attenuate, the lower 

 foliaceous; sepals ovate, abruptly acute or apiculate, finely puberulent dorsally 

 and more or less pale with a median gray band, 11-13 mm. long, 5.5-6.5 mm. 

 wide; spur medium, rather stout, nearly straight, 12-18 mm. long; limb of lower 

 petals ovate-oblong, bifid, the open sinus 3-4 mm. deep; upper petals short, 

 essentially included, short-acute; stamens lightly glandular-hairy; follicles ovate 

 to oblong, 9-11 (-26) mm. long, stramineous, finely puberulent, the cusp firm 

 and spreading; seeds prismatic-quadrate, strongly wing-angled, 2-2.5 mm. long, 

 dark-brown. 



In wet meadows and in wet gravel and soil along streams, in N.M. (Colfax, 

 Grant, Otero, Socorro, Taos and Valencia cos.) and Ariz. (Apache Co.), July- 

 Aug.; also n. Mex. 



Our plant is referred to subsp. amplihracteatum (Woot.) Ewan, with shorter 

 stems, less finely dissected leaves, and much smaller follicles than in typical 

 D. tenuisectum. 



5. Aconitum L. Monkshood 

 Possibly several hundred species in North Temperate regions of the world. 

 1. Aconitum columbianum Nutt. Fig. 450. 



Herbaceous perennial with several erect stems from a short thickened tuberous 

 crown, mostly 5-20 dm. tall thickened and fistulose, glabrous to slightly crisp- 

 puberulent below, spreading-pubescent above and glandular (at least in the in- 

 florescence); leaves mostly cauline, long-petiolate below to subsessile above; blades 

 5-20 cm. wide, very variable but mostly deeply 3- or 5-lobed with the segments 

 rhombic-ovate to cuneate-oblanceolate and variously incised to toothed or nearly 

 entire; raceme simple to freely branched; pedicels slender, acutely ascending; 

 bulblets often developed in the leaf axils or in the place of some of the flowers; 

 sepals 5, yellow or greenish-yellow to deep purplish-blue, rarely white, rarely 

 glabrous to hirsute and often somewhat glandular; hood 1.5-3 cm. high, not so 

 broad, the outer edge sharply declined and with scarcely any beak to gradually 

 or abruptly narrowed into a conspicuous descending to porrect beak; lateral 

 sepals obovate to reniform-obovate, to 2 cm. long; lower sepals lanceolate, to 

 about 1.5 cm. long, commonly the 2 unequal in width; only the upper petals 

 usually developed, the spur generally coiled; follicles 3 to 5, glabrous to glandular- 

 pubescent, 1-2 cm. long; seeds about 3.5 mm. long, with a prominent longitudinal 

 wing and a series of delicate ruffled sinuous transverse lamellae. 



921 



