380 Mr. J. Micrs 07i the Tribe Colletieae. 



fundum disci cratcriformis insito ; stylo brevi, stigmatis lobis 

 3, arete adpressis. — In Andibus Chilcnsibus excelsioribus. — 

 V. s. in herb. Hook., Cordillera^ in prrealtis (Bridges). 



This also is a dwarfish speeies, which attaches itself to the sur- 

 face of rocks, like the preceding species ; but it appears to be 

 somewhat more erect, with stouter and straighter branches, 

 which are closely beset with very short branchlets, all covered 

 with shorter, more numerous, and more minute leaves. In the 

 specimen above cited, the flowers are only in bud, and few are 

 developed ; these, however, are sufficient to show their sti'ucture. 

 The leaves, with their petioles, scarcely exceed 1^ line, or at 

 most 3 lines in length, and 1 line in breadth. The flowers are 

 smaller than in the preceding species. It has much the habit 

 of the Rhammis microphyllus of Kunth (tab. 616), but with still 

 smaller leaves*. 



4. Ochetophila riparia, Popp. ]\ISS. 



5. Ochetophila divergens, Popp. 



No description has yet been given of these two species, their 

 existence only being indicated in Endlicher's ' Genera Plantarum' 

 (No, 5733), where they are stated to have been found by Poppig 

 in Chile. 



5. Adolphia. 



This must be considered in some degree as an aberrant genus 

 of the Colletiece, amongst which it has been placed by Endlicher. 

 My reason for this doubt is founded on the structure of its 

 calyx, which is cleft down to the limit of the adnate disk, the 

 consequence of which is that the stamens appear to originate 

 outside the margin of the disk, as in the Rhamnea, thus divest- 

 ing it of one of the peculiar and distinctive characters of the 

 CoUetiecE ', on the other hand, the species on which the genus is 

 established has opposite leaves, — a feature rarely or imperfectly 

 developed in the Rhamnea;. I have also noticed, in the structure 

 and mode of dehiscence of the anthers, another character found 

 in some of the genera that follow, which I do not see recorded 

 in any species of the Rhamnea. Dr. Asa Gray remarks (PI. 

 Wright, p. 34) that Adolphia hardly diffiirs from Colubrina, 

 which may be true in some degree, as far as regards the struc- 

 ture of the flower ; but that genus has alternate leaves. Ceano- 

 thus is in the same category, although its fruit, as in Colubrina, 

 is said to be exactly like that of Colletia, Adolphia, and some 

 other genera of the CoUetietB. Brongniart's remark f on this 



* A representation of this species will be given in Plate 39 c of the 

 ' Contributions.' 



t Ann. Sc. Nat. x. 367. 



