PROF, OLIVER ON NEW PLANTS FROM RORAIMA. 297 
quite obsolete. Besides these there are several other remarkable South-American species : 
A. alata, Gottsche, from Chili, a very large species; Æ. prehensilis, Hook. f. et Tayl. Fl. 
Ant. t. 160. fig. 9 (under Jungermannia), originally from Hermite Island, since collected 
by Cunningham, with stems nearly six inches high, and always with its pruinose look 
when dry; A. polyclada, Mitt., gathered in Otway Harbour, Patagonia, during the visit 
of the ‘ Challenger’ Expedition, a small species about an inch and a half high (frons 
dorso planus levis, ramis valde approximatis bipinnatis, ventre ramulis curvulis crispulis 
telam spongiosam formantibus, margine ubique limbo e cellularum 3-4 lato pellucidiore di- 
stincto) ; A. polyptera, Mitt., from Magellan, collected in Cockle Cove by Dr. Coppinger, 
H.M.S. ‘Alert’ (frons 10 cm. alt., 2 em. lat., ramis approximatis tripinnatis ubique 
lamina 5—6 cell. lata, limbatus dorso planus levis ventre precipue in ramis ramulisque 
lamellis angustis longitudinalibus vestitus); and 4. denticulata, Mitt., from the Andes 
of Bogota, gathered amongst mosses by Weir (frons 5-6 cm. altus cum ramulis 1 em. 
latus, ramis remotiusculis bipinnatis ubique limbo pellucidiore cell. 4 lato margine 
denticulis divaricatis angustis subciliatus). Allthese species show that in South America 
there is a development of larger forms than are yet known elsewhere. 
BrrPHAROZIA Коватмж. Folia erecto-patentia imbricata, cochleariformi-concava inte- 
gerrima e lobulato obtusa; involucralia conformia, perianthia (abortiva) cylindracea 
abrupta obtusissima, ore parvo rotundo. 
From the top of Roraima, one stem only. 
Entire plant of a dark red-brown colour, about 4 ст. high; it is divided below into two, 
one branch being again forked, the leaves are imbricated in bifarious order and are 
repeatedly in interrupted series; each innovation arises from towards one side of the 
dorsal base of the perianth with small leaves, which increase rapidly in size upwards, the 
largest being the involueral, here the greatest diameter is about 4 mm. : the perianths 
are also about 4 mm. long, and of these as many as four are observable on the undivided 
stem, and as each innovation arises from the same position, they stand at the side of the 
stem rather towards the ventral side; in all particulars they closely resemble the abor- 
tive perianths seen on В. sphagnoides and other species; the young innovation also 
closely agrees with that of the male amenta of that species; but there is no trace of the 
lobule, which is not, as has been supposed, distinct from the leaf in B. cochleariformis, but 
is seen, from being an almost closed sac in some species, to be opened out in B. evoluta. 
DESCRIPTION OF THE PLATES. 
Prate XXXVII. 
Figs.1-8. (A.) Leitgebia Imthurniana, Oliver, sp. n. 1, plant in flower; 2, leaf; 3, pedicel and calyx ; 
4, bract; 5, corona; 6, two stamens and segment of corona; 7, pistil; 8, transverse section of 
ovary. 
Figs. 9-17. (B.) Bonnetia Roraime, Oliver, sp. n. 9, plant in flower ; 10, leaf; 11, flower; 12, calyx; 
13, petal; 14, phalange of stamens; 15, a back and front view of stamen ; 16, pistil; 17, 
transverse section of ovary. 
Figs. 1 and 9 reduced sketches, fig. 8 nat. size; all the other figures enlarged. 
SECOND SERIES.—BOTANY, VOL. II. 2v 
