318 
CONVOLVULUS involucratus. 
Leafy-cupped Guinea Bindiveed. 
PENTANDRIA MONOGYNI4A. 
Nat. ord. Convotvutr. Jussieu gen. 132, 
ConvotvuLacem. Brown prod. 481. 
CONVOLVULUS. Supra vol. 2. fol. 133. 
Div. Caule volubili. 
C. involucratus, foliis cordato-hastatis pubescentibus, pedunculis subtrifloris, 
calycibus bracteatis.. Willd. sp. pl. 1. 845. 
Plania annua, tota villosa. Caulis herbaceus, teres. Folia cordato- 
hastata, subtriuncialia, lobo medio ovato-acuminato, cuspidato, lateralibus 
pluriés minoribus horizontalibus, brevissimé ovatis: petiolus teres, “pariim 
brevior folio, crassitudine feré ramorum. Pedunculi solitarit, 1-3-flori, mul- 
tim longiores at graciliores petiolo, longiores vel. equales folio, teretes, stric 
tiuscul?, nunc supra semel v. bis breviter divisi, bracteis 2 oblongo-acuminatis 
sub quaque divisura: pedicelli breves. Bractex florales 2 anguste, lineari- 
lanceolate, breviores calyce sub quogue flore. Cal. foliaceus, magnus, inequa- 
lis, villosus, persistens, mollis, recurvo-patens ; foliola 2 exteriora maxima, 
inter se equalia, laio-ovata, acuta, opposita, nervosa, (a Willdenovio pro 
bracteis habita? ) ; interiora tria istis conformia, minora, inter se inequalia. 
Cor. extis pubescens, rotato-infundibuliformis, limbo obsolete quinguangulari, 
Fil. subulata, alato-membranosa, planiuscula, subpubescentia, tubo breve ad= 
nata, singula posticé ad juncturam cum fauce dentibus 2 obsoletissimis excepta. 
Anth, pallide, erecta, sagittato-lineares, longitudine fere filamentorum. Pistil- 
lum equale calyci: germen hirsutum semibiloculare,. 4-spermum; stylus capil- 
laris, pilosus, coloratus, indivisus: stigmata 2, lobiformia, divaricata, sub- 
ovato-oblonga, crassa, carnosa, granulata. 
We are obliged to Sir Abraham Hume for the specimen 
of this rare and curious Bindweed. There is no reason 
to suppose that the species has ever been introduced into 
Europe till now. Sir Abraham’s gardener informs us, that 
the seed was received from the Isle of France; and was 
raised in the bark-bed of the hothouse at Wormleybury, 
where it has run up among and wound round the other 
lants. The flower opens either in the night or very early 
in the morning; finally closing about 4 or 5 o'clock in 
the afternoon. The plant, from which Willdenow insti- 
tuted the species, was native of Guinea; the one preserved 
in the Banksian Herbarium is from the same quarter; in 
them the peduncles have sometimes 2 and even 3 flowers. 
In technical character ow plant agrees very well with the 
VOL. Iv. R 
