Robertson — Flowers and Insects. 163 



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

 Loew, Blumenbesuch von Insekten an Freilandpflanzea, Jahrb. Bot. 

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

 Kirchner, Nene Beobachtangen iiber die Bestaubuugseinrichtungen 

 einheimischer Pflanzen. Progr. 68 Jahresfeier d. K. Wlirttemb. land- 

 ■wirtschaftl. Akademie Hohenheim, 41. 1886. A. cicer. (Just 14': 791). — 

 (9) Lindman, Bliihen und Bestiiabungseinrichtungen ira Skandinavis- 

 chen Hochgebirge. Bot. Centralblatt 30:127, 157, 158, 1887. (Biol. 

 Centralblatt 8:198-201.) A. oroboides, frigidua, alpinus. — (10) Lind- 

 man, Ueber die Bestaubungseinrichtungen einigen Skandinavischen 

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

 Kerner, Ueber das Wechseln der BlUtenfarbe an einer und 

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

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

 Kenntniss der Bestiiubungseinrichtangen und Geechlechtsvertheilung bei 

 den Pflanzen. 1:32. 1888. 2:209-10. 1890. A. ezcapus, danicus, cicer, 

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

 Jahresfeier K. Wiirtterab. landwirtschl. Akademie Hohenheim, 44. 1890. 

 A. onobrychis. — (14) Robertson, Flowers and insects. V. Bot. Gaz. 16:199. 

 Ag. 1890.— (15) Kerner, Pflanzenleben 2:189, 266. 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. depressus. (Just 19i:436). — (19) Heinsius, Eenige waarnemin- 

 gen en beschouwingen over de bestuiving van bloemen der Nederlandsche 

 flora door losecten. 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. ^. monspessulanus, seml-cleistogamous. (Just20i: 488.) 



Stylosanthes elatior Schwartz — aS'. hijlora (L.) B. S. 

 P. — This plant bus 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 ^QVf 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 mona- 

 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 



