of the Galapagos Archipelago: 205 
rotundatis sinu acuto superné productis summo apice obtusis submem- 
branaceis venosis, pedunculo solitario unifloro petiolis longiore, pedicello 
brevi sub calyce vix incrassato, calycis angusté campanulati foliolis ovato- 
oblongis acuminatis, corollæ tubo elongato infundibuliformi calyce tripld 
longiore limbo patente, staminibus inclusis. 
Hab. James Island, Charles Darwin, Esq. 
Caules graciles, subnitidi, crassitie penne corvinz, Folia lætè viridia, 2-3 unc. longa, sub 
2 unc. lata, petiolo 2 unc. longo. Pedunculus validus, uncialis et ultra; pedicello cras- 
siore, 2 lin. longo, calyce paulo longiore. Calyx pro magnitudine floris parvus, 3 unc. 
longus. Corolla rosea, 2 unc. longa, tubo basi vix 2 lin. diametro, ore unciali. Stamina 
inclusa; antheris parvis. Stigma capitato-bilobum. 
Of this plant there is only a solitary specimen in Mr. Darwin's Herbarium. 
145. EvoLvuLUs GLABRIUSCULUS, Choisy, Diss. Sec. Convolv. p. 156. 
Hab. James Island, Dr. Scouler. 
M. Choisy looks upon this as identical with the West Indian plant, and 
different from the E. alsinoides, a widely diffused species, with which it has 
many points in common. 
146. Cuscuta Sanpvicensis, Choisy, Monogr. Cuscut. p. 180. 
Var. Mimose, pedicellis florum brevioribus, seminibus fulvis. 
Hab. James Island : in immense abundance amongst Mimosa bushes, Charles Darwin, Esq. 
Except by the characters above cited, I am unable to distinguish this from 
the Sandwich Island plant described by Choisy. 
APOCYNEZX. 
147. VALLESIA GLABRA, Link (Rauwolfia, Cav.). 
Hab. Chatham Island, Charles Darwin, Esg. Also found in the West Indies and on the 
South American continent, both on the eastern and western coasts. 
There is probably but one hitherto-described species of the genus. 
| GooDENOVLE. 
148. Scvora PLUMIERI, Vahl. 
Hab. Chatham Island, Charles Darwin, Esq. 
Professor Henslow remarks that one of these specimens is in a monstrous 
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