640 Anderson and Schafer. — Species Hybrids in Aquilegia. 



glands (6). Fig. i represents the petals of eight species drawn to scale. 

 As shown in the figure, they are developed anteriorly into a broad blade or 

 ' lamina', and prolonged below into a more or less narrow spur with the actual 







b c d e f 



Fig. I. Petals ot various species of Aquilegia, in full face and in profile. (a) A. ecalcarata 

 Maxim. (Ji) A. mridiflora, Pall, {c) A.fragrans, Benth. {d) A. vulgaris, Linn, (e) A. fyre- 

 naica, DC. (/) A. caerulea, James, {g) A. Skinneri, Hook. (A) A. canadensis, Linn. Natural 

 size. 



gland at its apex. In the widespread section Cyrtoplectrae (A. vulgaris, d ; 

 and A.pyrenaica, e), which includes species in Europe, Asia, and America, 

 the lamina and spur are about equally developed, and the latter is more or 

 less incurved. Related to this section are several curious Asiatic species 

 (represented in the figure hy A. viridiflora, b ; and A.fragrans, c) in which 

 the lamina is much wider than long. In the living flower the wide laminae 

 overlap and produce a peculiar cuplike effect. The American sections, 

 Rhodanthe and Macroplectrae, are both characterized by long and narrow 

 spurs. In the Macroplectrae {A. caerulea, f) the lamina is also well 

 developed. In one member of this group, A. longissima, the spurs some- 

 times reach a length of 15 centimetres. In the section Rhodanthe, repre- 

 sented in the figure by A. canadensis (h) and .(4. Skinneri {g), the spurs 

 are well developed and the laminae are short. 



In the Chinese species, A. ecalcarata, Maxim. (Fig. i, a), and a few 

 other related forms, the spur is represented by a small pouchlike gland. 



