PART ILI. | THE MECHANISMS OF FLOWERS. 477 
344, CALAMINTHA AcINos, L. :— 
Visitors : A. Hymenoptera—Apide: (1) Apis mellifica, L. $, s. and c.p., 
ab, (Thur.). B. Diptera—Bombylide : (2) Systceechus sulfureus, Mik., s. 
(Thur.). 
Calamintha alpina, Lam.—Both large-flowered and _ small- 
flowered plants occur, the flowers of both being hermaphrodite 
and proterandrous, but only the small flowers being capable of 
spontaneous self-fertilisation. 
The plant is visited by Syrphide and by a great number of 
bees and Lepidoptera (584, 609). 
Horminum pyrenaicum, L.—The dark-blue colour, the odour, 
and the very abundant honey attract numerous insects, while the 
marked proterandry renders self-fertilisation impossible (No. 609, 
fig. 125). 
345. MONARDA DIDYMA, L.—I have’seen this plant visited by 
Plusia gamma, L. 
Monarda ciliata (?) is adapted for fertilisation by Sphingide 
(228), 
Rosmarinus, L., according to Delpino, is proterandrous, and the 
stigma comes to take the place of the anthers (178). 
346. SALVIA PRATENSIS, L.—The remarkable mechanism of 
this flower, and the way in which it is fertilised by humble-bees, 
was so thoroughly explained and figured by Sprengel! that 
Hildebrand, in his work on Salvia (345), has described nothing 
new, except the proterandrous condition, which Sprengel had 
overlooked, 
Honey is secreted by the yellow, fleshy base of the ovary. The 
corolla is horizontal; the under lip forms a convenient platform 
for insects, and the erect, helmet-shaped upper lip incloses the 
anthers. In the first stage, the style, with its stigmatic branches 
still folded together, protrudes almost horizontally from the upper 
lip, in the second it points downwards with divergent and recuryed 
stigmas. The entrance to the tube is guarded by two lamelle 
which converge and coalesce with one another anteriorly ; these 
lamellz are attached to the inferior limbs of the enormously long 
connectives of the two stamens, and are produced by meta- 
morphosis of the inferior anther-lobes; the other and much 
longer limb of each of the two connectives rises up under cover of 
1 702, pl. 1. figs. 18, 24-83, 39, 42. 
