Mr. J. Miers on the Tribe Colletiese. 491 



obsolete dentatis, 3-nerviis, utrinque sparsim puberulis, supra 

 viridibus, subtus albido-pulverulentis, nervis rubescentibus, 

 pellucidis ; petiolo brevi canaliculate ; stipulis distinctis, op- 

 positis, patentibus,rubellis, obsolete 2-dentatis ; floribus parvis, 

 in axillis ramuloruni 1 vel 2, pedunculo brevi, puberulo ; calyce 

 breviter tubuloso, extus imo puberulo, superne glabro, intus 

 valde piloso, limbi laciniis 4, brevissimis, subpatentibus, petalis 

 4, laciniis sequilongis, orbicularibus, cucullatis, antheris iis in- 

 clusis ; drupa sicca ovali, mole fructus T. trinervisj apice re- 

 trorsum aibido-pilosa, iuio calyce marcido fulta, nuce 1-3-locu- 

 lari. Chile, in montibus Prov. Rancagua et Colchagua. 

 v. s. in htrb. Mus. Paris. Rancagua (Bertero, 193). 



The plant described by Dr. Clos (Gay's specimen from the 

 same locality), and referred by him to Retamilia, is evidently 

 identical with the above species, which I have characterized from 

 Bertero's collection. I do not adopt his specific name, as all the 

 species of Trevoa are spinigerous *. 



4. Trevoa Weddelliana, n. sp. ; suifruticosa, spinosa, ramosa, 

 ramulis teretibus, brachiatis, breviter pubescentibus, pilis pa- 

 tentibus ; spinis decussatim oppositis, subulatis, pungentibus, 

 divergentibus, ssepe foliosis ; ramulis junioribus foliiferis et 

 floriferis, sa3pe inermibus; foliis oppositis, ovatis, integris, 

 parvulis, vernatione complicatis, Isete viridibus, subtus palli- 

 dioribus, utrinque parce pubescentibus, nervis paucis superne 

 immersis, interne vix prominulis, inter se arcuatim nexis et ru- 

 bellis ; stipulis utrinque profunde bifidis, laciniis anguste linea- 

 ribus, imo petioli adnatis, rubellis, pilosulis ; floribus 2-3 

 folio sequilongis, pedunculo imo bracteolato, calycis tubo 

 urceolato, imo subgloboso, puberulo, limbi laciniis 5, reflexis, 

 tubi tertia parte longitudinis, apice intus callo carinaque me- 

 diana notatis, carinis pilosulis ad basin tubi decurrentibus ; 

 petalis 5, obovatis, cucullatis, imo unguiculatis, laciniis sequan- 

 tibus, erectis; staminibus iis reconditis; disco poculiformi, 

 omnino adnato ; ovario subglabro ; stylo erecto, piloso, fau- 

 cem tubi attingente ; stigmate 3-lobo. Bolivia, circa Chuqui- 

 saca. v. s. in herb. Mus. Paris (Weddell, 1212). 



This plant greatly resembles T. trinervis in habit, but it has 

 much smaller leaves, and is altogether more spinose. The in- 

 ternodes are 8-9 lines apart ; the spreading, decussating spines 

 are about the same length ; the foliiferous branchlets are from 

 ^ inch to 2J inches long, bearing about two flowers in the lower 

 axils ; the leaves are 3 lines long and 1^ line broad, on a petiole 



* A figure of this plant will be given in the same work, Plate 40 c. 



