214 Mr. J. Miers on the Tribe Colletiese. 



16. Colletia aciculata, n.sp.; — ramosissima, -intricatissime spi- 

 • nulosa, viridis, brcvitcr et rigide pilosula; ramis rectis, sub- 



teretibus, ramulis decussatis, crebre spinosis, spinis iteratim 

 spinulosis, spinulis brevibus, sulcato-striatellis, acute pun- 

 gentibus; foliis in ramulis novellis minimis, obovatis, pauci- 

 dentatis, glabris, viridibus, imo in petiolum brevem cuneatis, 

 - caducis ; floribus infra spinulas superiorcs fasciculatis, et hinc 

 spicam cylindricam oblongam multifloram mentientibus, pe- 

 dicello calyce breviore, calycis tubo late cylindrico, submem- 

 branaceo, imo inflato, carnosulo, limbi laciniis 5 acutis, sub- 

 reflexis, staminibus 5 cxsertis. — Peruvia : v. s. in herb. Mus. 

 Paris, sine loco aut designatione, No. 901 (sub. nom. " Re- 

 tama," Dombey) ; Tarma (Dombey, " vern. Naqui^'). 



Three specimens of this plant exist in the Paris Museum : 

 the first in flower, and the second in fruit, are in the Jus- 

 sieuan herbarium, both upon the same sheet as the original 

 typical species of C. sjmiosa ; and these are probably the iden- 

 tical plants which Poiret confounded together, in his descrip- 

 tion of the typical species, as being brought from Peru (Diet. 

 Suppl. ii. 312) : the third specimen was also collected by Dombey 

 at Tarma. It has much the habit of the preceding species, but 

 its branches assume the appearance of a broader and more 

 spreading spike : they are of a pale olive hue : the branchlets 

 are straight and cylindrical, the primary spines are about 

 I inch apart and 1| inch long ; the secondary spines are 3 lines 

 apart, and i to | inch long ; the tertiary spinelets are 2 to 3 lines 

 long, all being clothed with fine sparse down. The inflorescence, 

 owing to the closeness of the axils, covers the branchlets, each 

 appearing like a densely flowered spike ; the pedicels are 2 lines 

 long; the cylindrical calyx, but little swollen, though tumid at 

 base, is 2^ lines, and the segments 1| line long, and I5 line 

 diameter*. 



17. Colletia hystrix, Clos, in Gay, Chile, ii. 32; — ramulis tere- 

 tibus, rectis, rigidis, fuscis, pubescentibus, spinis brevibus, 

 com})ositis, 3-4-natim verticillatis, secus ramos valde ap- 

 proximatis, et hinc intricatione formam longam cylindricam 

 mentientibus, aut interdum nodos globosos interruptis emu- 

 lantibus, omnibus pilis rigidis patentissimis vestitis, et apice 

 calloso-pungentibus ; ramulis novellis inermibus, et foliiferis, 

 demum spinosis et aphyllis : foliis parvis, ovatis„ integris, aut 

 obsolete dentatis, mcmbranaceis subglabris, 3-nerviis, apice 

 nmcronulatis, imo in petiolum brevem attenuatis ; floribus 

 sparsis, subfasciculatis, pedunculo tenui, calyce sicco pallida 



* This species will be shown in the ' Contributions,' plate 36 c. 



