Robertson — Flowers and Insects. 163 



Alpenblumen, 230-2. 1881. A. depressus, monspessulanus, alpinus. — (7) 

 Loew, Blumenbesuch von lasekten an Freilaudpflanzen. Jahrb. Bot. 

 Gartens Berlin 3:96-8, 112, 116, 275, (28-30, 44, 48, 73). 1884. 8 spp.— (8) 

 Kirchner, Neue Beobachtungen liber die Best;iubuu'j;seinrichtungen 

 eiuheiinischer Pflaazen. Progr. 68 Jaliresfeier d. K. Wiirttemb. land- 

 wirtschiaftl. Akademie Hohenheira, 41. 1886. A. cicer. (Just 14':791). — 

 (9) Lindman, Bllilien und Bestiiubungseinrichtungen im Skandinavis- 

 clien Hocligebirge. Bot. Centralblatt 30:127, 157, 158, 1887. (Biol. 

 Centralblalt 8:198-201.) A. oroboides, frigidus, aliyimis. — (10) Lind- 

 man, Ueber die Bestiiubungseinriclitungen einigen Skaudinavischen 

 Alpenpflanzen. Bot. Centralblatt 33:59. 1888. A. oroboides. — (11) 

 Kerner, Ueber das Wechseln der Bllitenfarbe an einer und 

 derselben Art in verschiedenen Gegenden. Oest. Bot. Zeit. 

 39:77. 1889. A. vesicarius. (Just 171:536).— (12) Schulz, Beitriige zur 

 Kenutniss der Beslaubungseiurlchtungen und Geschlechtsvertheilung bei 

 den Ptlanzen. 1:32. 1888. 2:209-10. 1890. A. excapus, danicus, cicer, 

 glycyphyllos. — (13) Kirchner, Beitriige zur Biologic der Bliiten. Progr. 72 

 Jahresfeier K. Wiirttemb. landvvirtschl. Akademie Hohenheim, 44. 1890. 

 A. onobrychis. — (14) Robertson, Flowers and insects. V. Bot. Gaz. 15:199. 

 Ag. 1890.— (15) Kerner, Pflanzenleben 2:189, 26G. 1891. A. vesicarius, 

 (Just 17^:532). — (16) MacLeod, De Pyreneeenbloemen. Bot. Jaarboek 3: 

 438. 1891. A. monspessulanus. — (17) Schneck, Further notes on the muti- 

 lation of flowers by insects. Bot. Gaz. 16:313. 1891.— (18) Taubert, 

 Leguminosae. Engler u. Prantl, Die nat. Pflanzenfamilien. L. 63, 71, 77. 

 1891-2. A.depressris. (Just 191:436). — (19) Heinsius, Eenige waarnemin- 

 gen en beschouwingen over de bestuiving van bloemen der Nederlandsche 

 flora door insecten. Bot. Jaarboek 4:87-91. pi. 6. 1892. A. glycyphyl- 

 los. — (20) Loew, Bliitenbiologische Floristik. 1894. 9 spp. See also (21) 

 Kieffer, Observations sur la Cleistogamie. Bull. Soc. Bot. Lyon 8:17. 

 1890. .4. }norasi)ess!tZa?iws, semi-cleistogamous. (Just 20i: 488.) 



Stylosanthes elatior Schwartz — S. bijiora (L.) B. S. 

 P. — This phint has a southerly range. In Patterson's Cata- 

 logue it is credited to Jackson and Union Counties. It is rare 

 and blooms from June 8 to September 9. The small yellow 

 flowers have the petals and stamens inserted at the summit of 

 the calyx-tube. The vexillum is orbicular, bright yellow and 

 marked with a few lines forming pathfinders. As in Crotal- 

 laria, the wings are bright yellow and cohere at the summit, 

 serving to cover the pale keel. The keel is somewhat incurved 

 and closed except at base and tip. The stamens are raona- 

 delphous, but there is an opening in the base of the tube to 

 admit the bee's tongue to the nectar. As in Crotallaria and 

 Lupinus, five stamens have long anthers attached near their 

 bases and five have shorter anthers attached near their middle. 

 As soon as the flower opens, the tip of the keel is filled with 



