333 



IPOMCEA platensis. 



The Plata Ipomcea. - 



PEXTANDBIA MONOGYXI^. 



Nat. ord. Convolvdli. Jussieu gen. Div. I. 



Convolvulacea:. Brawn prod. 481. Sect. I. 

 IPOMCEA. Suprd vol. l.fol. 9. 



1. platensis, ramis pedunculis petiolisque tuberculatis; foliis palmatis, lobls 



septenis cuneato-oblongis, obtusulis cum brevi acumine, extimis mino- 



ribus, pedunculis pauci-plurifloris superne cymosis pariim longioribiw 



petiolo, calyce foliolisque suborbiculatis. 



Perennis, sempervirens, radice tuberosa. Folia glabra} lobi injra 3 



unctas longi, medius major inJra uncinm latus. Pedunculi .lolitarii, i-5-Jlori 



vel ultra, erecti, graciliores petiolo, breviores Jblio ; pedicelli breves, supemi 



cymoso-snarsi, singidi bractea parva acumi/iata subtensi. Cor. albo-purpuras- 



cens, substrata alio lineis tenuissimis purpureis dense striato; tubus pennS 



scriptoria duplo crassior, intHs saturate purpurevs ; \imhaa diametro 2 uncia- 



rum cum dimidio alterius, expla/tatus, corrugulatus, erosus, ad plicarum ter- 



fninaiiones exciso-emarginatus. Anth. una exsuperans stigma: Vix nota 

 const ans? 



We are indebted to the valuable collection at Spofforth 

 for the sample of this fine species, which we cannot trace 

 to any on record. Mr. Herbert, from whom we received 

 itj informs us that it was raised from seed collected by Mr. 

 Cooper on the banks of the Plata, where it is found in great 

 plenty. The specific name has been adopted at Mr. Her- 

 bert's suggestion; and to that gentleman we are obliged for 

 what we have to say of the plant; the sample not having 

 been preserved for description after the drawing had been 

 made. 



Cultivated in the hothouse. Flowers in August. The 

 foliage has a near affinity to that of Ipomcea digitata; but a 

 reference to the figure in Plumier shows the flower to be 

 there of a very dilFerent nature from the one in our plant. 



An evergreen perennial plant with a tuberous root. 

 Branches, peduncles, and petioles tuherculated. Leaves 

 palmate; lobes 1, cuneately oblong obtuse and shortly ta- 

 pered at the end, middle one the largest, under 3 inches 

 long, and less than one inch broad. Peduncles several- 



VOL. IV. X 



