230 
CONTRIBUTIONS TO BOTANY. 
nimis sparsis adpresse scabridulo-pilosis, subtus pallidiori- 
bus, subg’labris aut in nervis venisque trausversis promi- 
nulis tantum pilosulis, reticulatiSj in axillis nervorum paulo 
barbatis ; petiolo subtereti, subtenui, fere glabro, limbo 6-plo 
breviore : panicula coiymbosa, terminali, folio dimidio bre- 
viore, ramis divaricatis, scabrido-liirtellis ; calyce profunde 
5-partito, extus ruguloso, intusque glabro, lobis oblongis, 
obtusis, margine ciliatis ; corollm lobis oblongis, rotundatis, 
tuboque calyci mquilongis ; staminibus medio tubi insertis, 
longe exsertis ; stylo apice breviter bifido ; ovario drupaque 
pisiformi sti'uctura generis. — In Mexico : v. s. in herh. Hook.^ 
Sangolica (Broteri, 1022) ; Oaxaca (Galeotti, 3099). 
A veiy distinct species, with leaves 3-4^ inches long, 1^-3 
inches broad, on a petiole 6-9 lines long ; the calyx is 1 line 
long, the tube and lobes each of the same length. 
8 Ehretia exasjyerata^ nob. ; — ramulis teretibus, ingoso-lenti- 
cellatis, junioribus scabridis ; folds oblongis, utrinque 
sensim obtusis, a medio ad basin paulo angmstioribus, mar- 
ginibus remotiuscule sinuatis aut irregulariter grosse cre- 
natis, fragiliter coriaceis, supra viridibus, subnitentibus, tu- 
berculis albis piligeris crebre asperatis, in nervis longe intra 
marginem arcuatim nexis sulcatis, subtus paUidioribus, 
rigide scabridis, nervis prominentibus, in axillis barbatis ; 
petiolo latiusculo, sulcato, hispido-pilosido, limbo 18-plo 
breviore : paniculis terminalibus, divaricato-ramosis, rigi- 
dule hirsutulis ; calyce ad basin 5-partito, laciniis oblongis, 
acuminatis, scabride hirsutulis ; drupa 2-pyrena. — In Texas : ■ 
V. s. in herh. Hook.j San Felipe (Drummond, 296). 
A species approaching E. elUptica, but very distinct from it. 
The axils are about f inch apart ; the leaves are 3-3 1 inches 
long, l|-2 inches broad, on a petiole 2 lines long ; the panicle 
IS 2| inches long, the calyx IJ line long, the drupe 2^ lines 
in diameter. 
Bourreria. 
I have already stated {supr-a, p. 224) that the Bourreria of 
Browne Jacq.), which DeCandolle regarded as a 
mere section of Ehretia, must be regarded as a distinct genus, 
on account of the several differential characters there men- 
tioned. Its drupaceous fruit encloses four nucules, flattened 
on their converging angular sides, rounded exteriorly, where 
they are cleft obliquely into many thin laminiform plates, 
which are intersected by small divisions into numerous cells 
filled with fibrous and pulpy matter, thus forming a sub- 
