76 LAWSON": EEVISION OF THE 



with prominently embossed veins, and slighly hairy. Brewer and "Watson observe that 

 this plant is very variable as to size, foliage and colour of flowers. In Prof. Macouu's 

 specimens the gradually narrowed trumpet-like petal spur, and the long slender follicles, 

 are striking characters ; but Mr. Baker observed that, in a large bundle of specimens at 

 Kew, he could not draw any distinct line of demarcation between this species and A. 

 formosa. It is not to be concluded from this that the plants are not really distinct, as we 

 now know how prone Aquilegias are to hybridize and thus furnish puzzling connecting 

 links. 



Aquilegia truncata. Fischer & Meyer, Index Seminum Petropolitanum, 1843, p. 8. 

 Regel, Sert. Petrop., 1852, t. and p. 11. Lawson, Eanunc. Canad., p. 4t. Brewer & 

 Watson, Bot. California, I., p. 10. Watson, Bibl. Index, I., p. V. 



A. Canadensis. Torrey, Pacif R. Rep., IV., p. 62. 



A. Californica. Hartweg, in Lindl. Gar. Chr., 1854, p. 830, cum. ic. Gray, Proc. Am. 

 Acad., VII., p. 328. Regel, Garteuflora, IV., p. 131. 



A. eximia. Planchon, in Flore des Serres, 185*7, t. 1188. 



A. formosa var. Baker, Synops. Acj[uilegia, Gard. Chro., X. (IStS), p. 111. 



A. formosa. Macouu, in Herb. Canadian Survey. Cat., No. 6, in part. 



Rich ground and grassy slopes along streams, Black Water River, British Columbia, 

 June 11th, 18*75. — Macoim, in Herb. Canad. Survey. Shady places by streams, California. 

 — Breiver Sç Watson. 



4. — Aquilegia c^rulea, var. flavescens. 



Sepals reflexed in the expanded flower, lanceolate, yellow or slightly flushed on the 

 back with red. Petal-lamina obovate cuneate, of a paler yellow than the sepals, truncate at 

 apex ; spur nearly half an inch long, yellow, slightly incurved, knobbed. Styles and 

 stamens much exserted. Follicles pubescent. 



A. flavescens. Watson, Bot. 40th Parall., King's Rep., V., p. 10. Gray, Am. Jour. 

 Sc, ser. 3, III., p. 149. Porter, Hayd. Rep., 18*71, p. 4*7*7. Coulter, do, 1872, p. *759. Baker, 

 Synops. Aquilegia, Gard. Chro., X., (18*78), p. 20. Watson, Bibl. Index, I., p. *7. Macoun, 

 Cat. No. 63. 



A. Canadensis, A^ar. aurea. Roezl, in Regel's Gartenflora, 18*72, p. 258, tab. *734. 



Rocky Mountains. — Bourgeau. Dry rocky slopes, Michell Creek, British Columbia, 

 July 11th, 1883 ; Kootanie Pass, Rocky Mountains. — Dr. G. M. Dawson, in Herb. Canad. 

 Survey. Bow River Pass, in thickets, and at the base of the cliffs of the eastern range — 

 Macoun. Subalpine zone of the Rocky Mountains in Utah and Oregon, at an elevation of 

 from 5,000 to *7,000 feet above sea level. — Baker, who observes, " This is now widely spread 

 in English gardens." 



The normal form of the species has a Southern distribution, and is not found within 

 British America. 



5. — Aquilegia beevistyla, Hooher. 



Flowers bluish-purple, varying to paler (claret) colours, or white, but never orange-red 

 or yellow as in other N. American species. Sepals ovate-lanceolate, rather longer than 



