a = 
MONOGRAPHIA POLYGALACEARUM. 281 
Subsectio IT. 
Capsula semialata, oblonga; stigma superius vaginatum, nudum vel pilosum ; 
antheræ haud prorsum sessiles; semina biappendiculata ; alæ quam capsula brevio- 
res ac angusliores. 
Species omnes americanæ inter se valde affines ob capsulam semialatam formam 
sligmatisque. 
Species incertæ sedis P. Salviniana Bennet. 
P. HEMIPTEROCAR PA, Gray. 
Radix repens, crassa; caules plures erecti, striati, simplices, vel sub racemo, 
ramosi, angulati, subnudi, tenues ; folia angustissime linearia, sub racemo numero- 
siora; racemi elongati, demum unilaterales, fructubus pendulis ; sepala exteriora 
inæqualia ; alæ lanceolato-ovatæ, unguiculatæ, acutæ, quam corolla paulo longiores; 
petala superiora late obovata quam carina cristata breviores; antheræ subsessiles ; 
stigma superius barbatum ; capsula elliptica uno latere alata; semina cylindrica 
basi acuta, pilis sparsis hispida ; appendicula duo, ‘/, sem. æquantia vel supe- 
rantia, linearia. 
Pt. Wright. VI. p. 31, Hemsley centr. Am. vol. I, p. 60. 
Tab. nostra XXVI, fig. 1-2. 
Lemon : Hb. prop. 2640 Pacif. coast. fl.; Pringle FI. of Pac. Slope, Arizona 
sub nomine P. alba Nutt., nothern grassy slopes, Santa Rita Mountains, June 4; 
Mexican boundary Survey 194. 
Radix crassa, nodosa, repens, grisea, lignosa. Caules inde orti, erecti, rigidi 
usque ad 60 cm. longi, basi nudi, superne parce foliosi, striati, 1,5-1,8 mm. 
crassi, sub racemo interdum ramos duos breves, edens. Folia linearia, margi- 
nibus subrevolutis, mucronata, sessilia, glabra, 7-20 mm. long., 4 mm. lata. 
TOME XXXI, 2° PART. 36 
