206 Mr. J. Miers on the Tribe Colletiese. 



sufFulto. — In Andibus Chilensibus et Mendocinis. — v. s. in 

 herb. Hook. (Gillies, Cuming). 



This species is very different in its general appearance from 

 the three preceding, its spines being much shorter, very much 

 entangled, of a dark colour ; its flowers are smaller, and more 

 contracted in the middle. The primary spines are 2-2| inches 

 long, the secondary are g^ to 1 inch, the tertiary spinelets are 

 2 to 4 lines ; they are all quite glabrous. The pedicels are 

 very slender, 2 lines long ; the calyx, including the segments 

 of its border, is 3 lines long and 1| line in diameter in the 

 mouth ; the flowers are of a pale reddish-white colour, and of 

 thin texture*. 



5. Colletia atrox, n. sp. — Discaria Americana, Hook, in parte, 

 Bot.Misc. iii. 172 ; — horride spinosa, ramulis pallide olivaceis, 

 striatulis, spiuis elongatis, validissimis, crassis, secundariisque 

 brevibus decussatimoppositis,glaberrirais,valde corapressis, imo 

 latis et hinc subdecurrentibus, pallide viridibus, apice calloso- 

 pungentibus, aphyllis aut foliis caducissimis ; floribus majuscu- 

 lis,palidissimis,2-8, fasciculatis, e tuberculo squamoso ad basin 

 spinarum enatis; pedunculo flore paulo breviore, calyce late 

 tubuloso, medio subconstricto, textura tenui, albido, imo in- 

 flato, limbi laciniis 5 revolutis; antheris parvulis, globosis, in 

 ore fere sessilibus, stylo exserto, imo articulato, et mox ca- 

 duco, ovario globoso, 3-lobo. — Buenos Ayres. — v. s. in herb. 

 Hook. (Tvveedie). 



The strong and flattened spines of this plant give it a peculiar 

 character, which indicates an approach to the following remark- 

 able species. The branchlets are about 4 inches in length, the 

 primary spines 1^ inch long, gradually diminishing upwards; 

 their secondary spines, in one, two, or three almost horizontally 

 salient decussating pairs, are from 3 to 6 lines long, much flat- 

 tened and spreading at their base, where they are 2 lines broad 

 and half a line thick, all armed with a reddish, sharp, callous 

 point ; they are of a greenish pallid hue. The flowers, in clus- 

 tered fascicles, are nearly the size of those of C. intricata, and 

 of the same pale colour ; the tube is more globose at the base, 

 and much contracted in the middle, 2^ lines long, the diameter 

 of its mouth 1^ line, and the reflected segments 1 line in length : 

 the slender peduncles are 2 lines long. This plant, by mistake, 

 is confounded with Discaria Americana in the 'Botanical Mis- 

 cellany^ t- 



* A representation of this species will be giveu in the ' Contributions,' 

 plate 31 c. 



t A drawinji of thi^ plant will be given in the same work, pi. 34 D. 



