Botany and Zoology. 237 
the conspectus hardly exhibits the characters. The order is chiefly 
tropical, but it, like ‘several others, finds its most nprthern ae 
in the Northern United States or British America It is 
of S. Texas 
pilosa (T ae Ra — ashe a mere variety of 7! oe 
int . Floridana of 8. Watson is cited as a synon 
T. gracilis, Bs his | Se linearis, Benth. is in PUES psi Reefer 
rom 8. T Tradescantia leiand? ra.of Torrey is Commelina 
leiandra of apres while Torrey’s var. brewijolia is BAM Ay ? oe 
andra of the same 
The Cuc urbitacec, ably monographed by Cogniaux of Belgium, 
occupy two-thirds of the present volume. It is more than fifty 
Ww 
deserves) high praise from the present monographer. Indeed, 
the classification of the Genera Plantarum is completely adopted ; 
and the changes in the limitation of genera are wonderfully few 
unexamined ps aap which M. Cogniaux has had in hand. So 
hot seen; a so that over one-third e them n 218) have been 
hee dees ee an opinio and upon 
pia instance is_ really faralshed by the genus Feuillea, which 
has the full number of five stamens, wholly separate, and. alter- 
hate with the petals. If thelr anthers were really bilocular, as 
Hooker in the Beaes Plantarum took them to be, then it wou 
probably be pee *G say that the ordinary Cucurbitacer have 
23 stamens, @. e. with bilocular and one with an eae 
anthers, tf, on the contrary, these normal tive e are Bnilog ae 
spparent pats phere are eee i age nited in 
pairs, and one separate. Now roi? is pone nk in the 
