8 BOTANY OF THE VOYAGE OF THE SULPHUR. 
want of an involucellum, the character of Bombicella, which ought perhaps 
rather to be considered as a distinct genus than as a section of Hibiscus. In 
some other species, however, of Bombicella, as in some Fugosie, the involu- 
cellum is reduced to small setiform appendages, slight traces of which may be 
observed on the young bud of the present species. 
7. Gossypium, sp. foliis omnibus integris late cordato-ovatis subtus uni-glandulosis.—Bay of 
Magdalena. 
These specimens do not agree with any of the published forms of Cotton with 
which I am acquainted, but the seeds are wanting; and, according to those who 
have classified these varieties or species in the least unsatisfactory manner, it is 
only from the seed that any positive character can be drawn, and I therefore 
abstain from giving a new name to the present one. 
8. AsuTILon californicum, sp. n., undique stellato-tomentosum, foliis late cordato-ovatis 
crenatis subangulatisque concoloribus, pedunculis petiolo longioribus, capsule calycem sequantis vel 
vix superantis stellato-tomentosz loculis 10 trispermis lanceolato-rostratis.—Bay of Magdalena. 
This species is very like the A. commune, but the peduncles are longer, the 
calyxes larger, the capsules smaller, and covered with a short cottony down 
instead of long hairs. 
9. Sips malveflora, DC.—Torr. et Gr. Fl. N. Amer. 1. p. 234.—San Francisco and the Rio 
Sacramento. 
10. Metocuta tomentosa, Linn.—DC. Prod. 1. p. 290.—Bay of Magdalena. 
A common West Indian and Central American plant, of which this is 
probably the northern limit. 
MALPIGHIACE®. 
11. Janusta californica, sp. n., (Plate IV.) foliis ovatis lanceolatisve acutis basi subcordatis 
utrinque ramulisque sericeo-pilosis, petiolis eglandulosis, pedunculis axillaribus dichotome vel 
umbellatim 2-8-floris—Bay of Magdalena. 
Ramuli volubiles, tenuiores quam in J. guaranitica, pilis albidioribus. Folia pleraque semipollicaria, vix 
unquam pollicem aequantia, nunc anguste ovato-lanceolata acutissima, nunc ovata acumine brevi acuto, margine 
glandulis minutis dentiformibus raris plus minusve notata. Petioli 1-2 lin, longi. Loco stipularum glandulze 
adsunt in caule minute. Pedunculi subsesquipollicares, apice bifoliolati, pedicellos ferunt 2 ad 6 pedunculo 
ipso longiores, semel iterumque bibracteolatos, simplices unifloros vel bifurcatos bifloros, rarius iterum umbelli- 
feros. Flores quam in J. guaranitica minores. Calycis laciniee lanceolate, obtusiuscule, basi pilose, apice 
ss quorum 4 basi glandulas 2 parvas obovoideas ferunt. Petala calyce duplo longiora, lamina lata, 
carinata, margine vix dentata. Stamina vidi 1-3 antherifera, et interdum 1-2 parva, sterilia. Ovaria 3, basi 
