Robertson — Floivers and Insects. 1G3 



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

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

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

 Kirchner, Neue Beobachtungen iiber die Bestaubungseinrichtungen 

 einheimischer Pflanzen. Progr. 68 Jahresfeier d. K. Wiirttemb. laud- 

 wirtschaftl. Akademie Hohenheim, 41. 1886. A. cicer. (Just 14 1 : 791;.— 

 (9) Lindman, Bliihen und Bestaubungseinrichtungen im Skandinavis- 

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

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

 man, Ueber die Bestaubungseinrichtungen einigen Skandinavischen 

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

 Kerner, Ueber das Wechseln der Bliitenfarbe an einer und 

 derselbeu Art in verschiedeneu Gegenden. Oest. Bot. Zeit. 

 39:77. 1889. A. vesicarius. (Just 17 1 :536). — (12) Schulz, Beitriige zur 

 Kenutniss der Bestaubungseinrichtungen und Geschlechtsvertheilung bei 

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

 glycyphyllos. — (13) Kirchner, Beitriige zur Biologie 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, 266. 1891. A. vesicarius, 

 (Just 17 1 :532). — (16) MacLeod, De Pyreneeenbloemen. Bot. Jaarboek 3: 

 438. 1891. A. mo?ispessulanus. — (17) Schueck, 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 19 2 :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. A. monspessulanus, semi-cleistogamous. (Just20 1 : 48S.) 



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

 P. — This plant 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 i'ew 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 Crolallaria 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 



