SOUTH AMERICAN PLANTS. 113 
7. Petunia ovalifolia (n. sp.) ;—suffruticosa, subglabra ; foliis 
obovatis, erectis, utrinque scabrido-punctatis, margine sca- 
brido-ciliatis, sessilibus, rachi prominenti basi valde tumido, 
supra venis impressis, subtus evanidis; pauciflora, pe- 
dunculo axillari folio dimidio longiore, corolle tubo calycem 
5-partitum vix excedente, limbo expanso dense purpureo, 
interdum pallidiori, lobis ovalibus emarginatis.—Rio de la 
Plata et Brasilia meridionali.—v. s. in herb. Hooker. Banda 
oriental ad Coloniam, (Tweedie, n. 286). Viamonte, Prov. 
Rio Grande, (rupibus siccis, Tweedie, n. 287). Rio Grande, 
(Isabelle). 
This is a plant differing in its aspect from all other species, 
it has a woody repent root, with erect branches about 6 inches 
in height, the internodes being shorter than the leaves, 
which are sessile, erect, cuneately ovate, 7 lines long, and 
nearly 4 lines broad, the midrib is prominent below, termi- 
nating on the stem in a tumid pulvinate swelling, they are 
covered on both sides with short, rigid, spreading pubescence, 
the margins ciliate; the pubescence of the peduncle and 
calyx is similar, but often terminating in a viscid gland; 
the peduncle is 9 lines long, the calyx 5 lines, cleft half-way 
into 5 angular, somewhat oblong and obtuse segments ; 
the tube of the corolla is 6 lines long, swelling towards the 
mouth, with a broad spreading border nearly 3 of an inch 
in diameter, divided into 5 oblong emarginate lobes of a 
deepish purple colour: the capsule is smooth, obovate, 
shorter than the persistent calyx that encloses it, the valves 
being entire, with a notch in the apex of each.* 
8. Petunia viscidula.—Nierembergia viscidula, HBK. 7, 205 ; 
—herbacea, procumbens, tenuissime viscidulo-hirtella, 
foliis subsessilibus, lanceolatis, vel oblongo-spathulatis ; 
floribus solitariis, axillaribus, breviter pedunculatis, corolle 
tubo calycis laciniis foliaceis spathulatis subeequante.— 
Mexico, in hort. cult. 
Nothing seems to be known of this plant beyond the 
i A figure of this plant is given in Plate 24. 
Q 
