AND FEBTILIZATIOX OF BONATEA. 



473 



Sonatea sjyeciosa, to which also in many of its characters it bears 

 a close relation. 



Like speciosa and Boltoni, its anterior petals are divided, the 

 posterior portions being relatively of larger proi^ortions. In this 

 respect it differs from Saundersicc^ whose petals ^re undivided, but 

 resembles it in the broad and conspicuous lamina? of the anterior 

 portions. Relatively to the breadth of the anterior portions, the 

 posterior are narrower than in S2)eciosa, 



Its anterior sepals are partially like those of both these plants. 

 Like those of s^eciosa, they are deeply and complicately cleft and 

 falcate, and are united to the labellum with the petals ; but, 

 unlike them, they lie in a plane almost at right angles to the 

 anterior petals, and cross their blades behind in a direction almost 

 parallel to the lateral processes of the labellum. Like those of 

 Saundersice they are decumbent, and show the slightest imagin- 

 able inclination to turn upwards at their extremities like those of 

 speclosa. 



Fig. 1. Under surface of labellum oi Bonatea Darwinii (magnified). 

 Fig. 2. Pollinium of ditto in natural position (magnified). 

 Fig. 3. Under surface of labellum of Bonatea speclosa (from Mr. Tr 

 Fig. 4. ' Pollinium of ditto (from Mr. Trimen). 



The lateral processes of the labellum are even broader than 

 those of Saiindersia?, but not so lucurvedly falcate, and the medial 

 process is shorter than the lateral, in which respect it differs from 

 Saundersicd, but more nearly resembles speciosa. 



2i2 



