2 ANGIOSPERMAE—DICOTYLEDONES 



Siphocampylus, but Farrer says that Lobelia agrees with this in all essential respects.) 

 {C/.Y\g. 211.) Some of the species are described as self-sterile, e.g. L. fulgens 

 (Gaertner), L. ramosa (Darwin), and L. cardinalis (Forke). 



1688. L. Erinus L. (Delpino, ' Ult. oss.,' pp. 102-11; Hildebrand, op. cit.; 

 T. H. Farrer, Ann. Mag. Nat. Hist., London, Ser. 4, ii, 1868, pp. 255-63; Knuth, 

 ' Bloemenbiol. Bijdragen.') — Hildebrand says that in this species the end of the style 

 is often unable to break through the firmly closed anther-cylinder, inside which the 

 stigmatic lobes then expand, and are self-pollinated. Normally, however, the pollen 

 is swept out of the anther-cylinder during the first stage of anthesis by means of 

 a stylar brush. During the second stage the end of the style emerges from the 

 anther-cylinder and unfolds its two tolerably large stigmatic lobes, which are beset 

 with papillae (cf. Fig. 211). 



1. 2. 3. 



Fig. 211. Lobelia Erj'inis, L.{{vom x\Sii.\iirtt\ (i) Flower in the first (male) stage, seen from the front : 

 a, the pollen-covered anthers in the entrance of the flower. (2) Ditto, in the second (female) stage, after 



removal of the corolla : a, anther-cylinder, from which the receptive stigma {s) protrudes ; 7/, nectary, 

 {-i,) Ditto, in the first stage, after removal of the corolla: «, nectary; j, the still immature stigma, 

 covered with sweeping-hairs. 



Visitors. — The following were recorded by the observers, and for the localities 

 stated. — 



Knuth (in his garden at Kiel). — A. Diptera. Syrphidae : i. Syrphus corollae./^. 

 5; 2. S. sp. ; 3. Syritta pipiens L. B. Hymenoptera. Apidae: 4. Andrena sp. ; 

 5. Apis mellifica L. 5; 6. Bombus terrester -£. $ ; 7. Halictus minutus Schr. 5. 

 C. Lepidoptera. Rhopalocera : 8. Vanessa urticae L. ; 9. Pieris sp. All skg. 

 Delpino, small bees (sp. of Halictus). Ducke (Austrian Silesia), the beautiful para- 

 sitic bee Crocisa scutellaris F. 5. 



1689. L. syphilitica L. (Urban, Jahrb. bot. Gart., Berlin, i. 1881, pp. 260-77 ; 

 Delpino, ' Altri appar. dicog. recent, oss.,' p. 16.) — Urban says that the flower 

 mechanism of this species agrees essentially with that of L. Erinus. 



Visitors. — Delpino says that humble-bees are the most frequent (Bombus 

 italicus L. — and B. terrester Z.). 



1690. L. Dortmanna L. (MacLeod, Bot. Jaarb. Dodonaea, Ghent, v, 1893, 

 p. 442.) — This species bears few-flowered racemes. The corolla is whitish, and its 



