2 
To this genus belongs, apart from 7. huillensis mentioned above 
and another imperfectly known species from Nyasaland (see Stapf Lec. 
p. 50), 2. Zea, Stapf (Rottboellia Zea, C.B.Cl. ; R. thyrsoidea, Hack.), 
which in Hackel’s Monograph of the Andropogoneae (p. 283) represents 
a distinct monotypic ep Thyrsostachys. T. Zea ranges from 
the Khasia Hills to Tonkin. It is characterised by large panicles 
Ae i of very numerous slender racemes, pseudo- -verticillately 
nged. The structure and ha of the spikelets are the same as in 
the. Anion species.—O. Sra 
Fic. 1, two pairs of spikelets, back view of raceme ; 2, same, front view of 
raceme ; 3, lower glume from within ; 4, upper glume; 5, valve of lower floret, 
with flaps spread out ; 6, vavids of & same ; 7, valve of upper floret (3-7 rhe rs 
an 8, lower glume ; 9, upper glume ; 10, valve of lower floret, wi 
spread out ; 11, valve of upper floret ; 12, valvule of same (8-12 of fully bon 
fodinelind: spikelet). All enlarged. 
