LACTUCA. 247 
Pappus plumosus, copiosus, biseriatus. Ovaria glabra 
alba, apice calycis margine crenulato intra quem pappus 
oritur coronata compressa, ovula l basi afixa, foramen 
hilum prope, raphe completa. 
Receptaculum conicum, sursum inter flores in paleis pili- 
formes dentatas product. 
Has. Assam. In graminosis, Bishenath: March 20ih, 
1836. no. 431. 
Oss. The nucleus is united firmly to the integuments of the 
ovula, which appear to be two, the raphe is nearly com- 
plete, and evidently runs within the outer integument, and 
in the substance of the nucleus itself, it contains spiral ves- 
sels and disappears gradually within the lip of the foramen. 
The structure of the palez is nearly the same with that 
of the pappus, with this difference that none of its periphe- 
rial cells are elongated into simple hairs. 
Venatio Brunoniana venulam apice quasi clavate conni- 
Ventes sed nec decurrentes, stigmata post anthesin exserta, 
Corollze apicem versus primo marcescens. Sacculus in quo 
embryonem oritur, nec membranaceus aste cellulis parvis 
formatur, JEstivatio valvata. Inflorescentia orthodoxa, flos- 
culis centralibus nempe tardius expansis, vel flosculis gra- 
us à peripheria ad centro evolutis. Pl. CCCCLXVI. 
1g. a. 
LACTUCA. 
l. Lactuca bialata Gr. 
Herbacea basi suffruticosa 5-6-pedalis tota glaucescens, 
Succo lacteo læte, Caulis simplex crassus solidus. Folia 
alterna pendula indivisa lineari-ensiformia pedalia diametro 
trans, Subuncialia, acuminata, sessilia, basin versus parce fim- 
briata dentata, cæterum denticulata, denticulis mucroniformi- 
bus ; vena infra prominula alte carinata, quasi triangulari- 
Ma ; supra planiuscula, medio longitudinaliter et obsole- 
