LEGUMINOSAE 



297 



is visited, cross-pollination is consequently effected. As anthesis progresses, the 

 brownish tint which replaces the original golden-yellow colour becomes more pro- 

 nounced. At the same time, the vexillum with its 12-16 wavy ribs, becomes applied 

 to the other parts of the flower, and closes the entrance to them. 



Visitors. I observed the honey-bee, and Bombus pratorum Z. 5 a t Kiel ; in 

 Sylt only the former. 



70a. T. procumbens L. (main variety). (Herm. Mailer, ' Fertilisation,' p. 187, 

 'Weit. Beob.,' II, p. 250.) 



Visitors. Herm. Miiller (H. M.) and Buddeberg (Budd.) record the following 

 insects, all skg. 



A. Hymenoptera. Apidae: 1. Andrena schrankella Nyl. $ (Budd.); 2. Apis 

 mellifica L. 5 (H. M.); 3. Halictus flavipes F. 5 (H. M.); 4. H. nitidiusculus K. y 

 (Budd.). B. Diptera. Muscidae: 5. 

 Ocyptera brassicaria F. (Budd.). C. 

 Lepidoptera. Rhopalocera: 6. Epi- 

 nephele janira L. (H. M., Thuringia); 

 7. Lycaena icarus Rott. (H. M.). 



MacLeod observed Apis and a Muscid 

 in Flanders (Bot. Jaarb. Dodonaea, Ghent, 

 P, 1894, p. 350). 



In Dumfriesshire 3 hover-flies were 

 recorded (Scott-Elliot, 'Flora of Dum- 

 friesshire/ p. 46). 



703. T. minus Relhan. (Knuth, 

 ' Bl. u. Insekt. a. d. nordfr. Ins./ p. 153.) 



Visitors. In Sylt and Kiel I ob- 

 served Apis mellifica L. 5, skg. Herm. 

 Miiller saw, in addition, Halictus albipes 

 F. 2, skg., and H. cylindricus F. $, po-cltg. 



Alfken noticed the following bees at 

 Bremen. 



I. Andrena parvula K.%; 2. Nomada 

 succincta Pz. 



MacLeod observed 3 Lepidoptera in 

 the Pyrenees (' Pyreneenbl./ p. 437). 



Fig. 96. Tri/olium badium, Schreb. (after Herm. 

 Miiller). A. Flower seen from below (X 7). B. The 

 same, after removal of calyx and vexillum ; seen from 

 above. C. Stigma (st) and stamens (a) in their natural 

 position (X 35). References as in Fig. 94, also: a*, 

 upper anther ; Ji, upper filament; ov, ovary ; ss t alar 

 processes. 



704. T. subterraneum L. (Warm- 

 ing, Bot. Jahrb., Leipzig, iv, 1883, p. 502 ; 

 Glaab, D. bot Monatsschr., Arnstadt, ix, 1890, pp. 20-2 ; Ross, Malpighia, Genova, 

 v, 189 1.) According to E. Warming, the inflorescence bears but few (usually 3-4) 

 normal flowers which set fruits, and are capable of self-fertilization, though perhaps 

 they do not always effect this. The inflorescence turns downwards, and penetrates 

 into the ground. In order to protect it from injury, the upper vestigial flowers 

 become converted during the period of fruit-forming into peculiar hook-like organs 

 which fix it in the ground, and protect the maturing fruits. The normal flower is 

 almost sessile, while the modified ones possess particularly strong stalks, 2-4 mm. in 



