ROTTBOELLIA. ANDROPOGONEE (AUCT. EDUARDO HACKEL). 907 
funde exeisi. Spieulz sessiles cum callo angustissime annuliformi a 
reliqua gluma strietura profunda separato 6—7 mm. longse, lineari- 
lanceolat®, cavum rhacheos exacte occludentes, glumis omnibus gla- 
bris : I" subcartilaginea, angustata, acuta v. obtusiuscula, marginibus 
superne anguste inflexis, flexuris infra apicem margine angusto 
coriaceo scabro cinetis, intus 5-nervis ; II^ I*» subzquans, lanceolata, 
acuminata, mucronulata, 3-nervis, earinata, dorso glabra v. minute 
hispidula; III" paullo brevior, oblonga, acutiuscula, 2—3-nervis, mar- 
ginibus inflexis interdum ciliolatis, paleam ipsa '/, breviorem acutius- 
culam subenervem lodiculasque 2 angustas sed nullum florem fovens ; 
IV: III» subzequans, ovato-lanceolata, 1-nervis; palea glumä '/, bre- 
vior, lineari-oblonga, truncata, 2—3-denticulata, enervis. Anthers 
3 mm. longze. Styli stigmata subsequantes. 
Subspec. a. genuina (Hack., l. c. fig. 1). Gluma F= spiculæ sessi- 
lis dorso rugis transversis valde elevatis gibbosis notata. Spicula 
pedicellata tabescens, pusilla, pedicello compresso spiculam sessilem 
sequanti insidens. — R. filifolia C. Wright in Sauvalle Fl. Cubana, 
p. 200; Ophiurus loricatus Nees ap. Steud. Synops. 1, p. 360? 
Brasilia (cfr. Fl. bras. 1. c.); Cuba (Wright 3905). 
Subspec. b. glaberrima (Hack., l. c. fig. 3). Gluma I^ spieulz ses- 
silis dorso lsevis, rubro-punetulata; spieule pedicellat® flore 3, ses- 
silibus paullo breviores v. rarius (interdum in eodem racemo) tabes- 
centes, parvze ; pedicellus spicula sessili '/, brevior, raro eam sequans. 
Folia iis preecedentis paullo tenuiora, spieule submajores.— Brasilia. 
Subspee. c. subgibbosa (Winkl. ap. Hack., l. c. fig. 2). Inter præce- 
dentes plane intermedia, valde memorabilis : non solum in diversis 
ejusdem c#spitis racemis maxime variant spicule, sed etiam in uno 
eodemque racemo. Spiculz inferiores ut in subsp. b, superiores ut in 
a, medie obsolete rugos®. Spiculæ pedicellatæ modo tabescentes, 
modo 8. Combinationes varias deseriptze sunt in Fl. bras., l. e. 
p. 311. — Brasilia, nec vero in societate priorum, id quod hybriditatis 
suspicionem removet. 
t Pedicelli sine appendice auriculiformi (24—26). 
o Culmi supra medium florifero-ramosi; vagine culmez valde elongate, basi dilatatz, superne augustatze 
