CONTRIBUTIONS TO BOTANY. 
193 
the opening of the petals they separate from one another almost 
to the base, and even there they are detachable by a shght force. 
The style is 7 lines long, slender, continuous with the free coni- 
cal summit of the ovary, and, like it, perfectly glabrous; in 
the American specimens the style is pubescent. The internal 
structure of the ovary has been fully described ; the placenta in 
this instance rises to \ the length of the internal space, four 
ovules in two series being found in each of the four basal divi- 
sions, two erect and two pendent. The fruit is from 1-1^ inch 
long, and f-| inch broad across the wings, which are equal. 
2. Halesia diptera, Linn. Sp. 636 ; Cav. Diss. vi. 338. tab. 187 ; 
Mich. FI. Bor. Amer. ii. 40; Pursh, N. Am. FI. ii. 450 ; Lod. 
Bot.Cab. 1. 1172 ; A. DC. Prodr. vui. 270 ; — ramulis subangu- 
latis, cortice in fibrillis longis rimoso ; folds oblongo-ovatis, 
acumine angustato, imo acutis, margine denticulatis, dentibus 
glandulosis, supra laete viridibus, subglabris, subtus palli- 
dioribus, obsolete puberuhs, margine ciliatis (junioribus pu- 
bescentibus), petiolo canahculato vix puberulo ; floribus 3-4 
majoribus, et ut in praecedente in axillis annotinis aphyUis 
praecocibus, pedicellis flore brevioribus, nutantibus, et cum 
calyce tomentosis ; calycis dentibus acutis, petalis 4-5, sparse 
molliter puberulis, staminibus 8,filamentis latis,membranaceis, 
glabris, imo vix agglutinatis ; ovario semisupero, tomentoso, 
stylo hinc usque ad medium puberulo, superne glabro, et sae- 
pissime in filis 3 tenuibus fisso ; fructu semper alis 2 latis, 
2-3 obsoletis aut angustissimis. — In Carolina, Georgia, et 
Florida. — v. v. in hort, Kew. 
The tree from which the above diagnosis has been drawn has 
always been considered by every one attached to Kew Gardens 
as the Styrax grandifolium of Alton. Mr. Smith, who has been 
in that establishment for a period of thirty years, says that 
when he first went there this tree was understood to be Alton’s 
plant above mentioned ; but although differing essentially in 
character, no one during this interval has suspected it to be 
otherwise than the species mentioned. Last year I watched its 
growth, with the hope of finding for examination the fruit of an 
American species of Styrax ; but, to my surprise, I found it to 
belong to Halesia, when I was assured that it had never been 
known to produce fruit before. On comparing it with au- 
thentic native specimens of Halesia diptera, I am unable to 
distinguish any specific difference between them ; but as many 
essential discrepancies exist in the published accounts of the 
plant, I have given the above diagnosis from my own observa- 
tions. I find one peculiarity in the leaves which does not ap- 
VOL. I. 2 c 
