252 DR. M. T. MASTERS ON THE SOUTH AFRICAN SPECIES 
R. SonDERIANUS, sp. n. Culmis cespitosis, spithameis, filiformibus, 
erectis, flexuosis, simplicibus, rigidis, flavidis, minutissime punctulatis, 
basi spatium pollicare vaginis coriaceis castaneis impresso-punctulatis 
striatis dense obsitis, superne remote vaginatis; vaginis arctis, ellip- 
ticis, coriaceis, fuscis, nervoso-striatis, sub apice membranaceo cinereo 
subulato-mucronatis; spiculis 1-4, in apice culmi approximatis, ses- 
silibus vel breviter pedicellatis, singulis ovato-oblongis, erectis (3—4 lin. 
long., vix 2 lin. lat.), basi spatha aperta vaginzeformi suffultis ; bracteis 
primum arcte demum laxe imbricatis, infimis sterilibus, oblongo-ob- 
tusis, coriaceis, nervoso-striatis, mucronato-aristatis, ceteris fertilibus, 
oblongis, acuminatis, castaneis, flores oblongos arcuatos vix super- 
antibus; glumis externis oblongis, rigidiusculis, lateralibus condu- 
plieatis, ad carinas glabris; glumis internis parum minoribus, con- 
formibus, hyalinis, basi ferrugineis; antheris lineari-oblongis, flavidis, 
exsertis ; pistilli styli rudimento minuto. 
Hab. C. B. S. Ex.sp.s. d. Drége, 82 pro parte! 
Kunth cites under Drége 82 his R. pseudoleptocarpus = R. va- 
ginatus, Thunb., from which, however, the present differs consider- 
ably in size, in the warting of the culms, and in the form of the 
spikelets and glumes. It more nearly resembles the following 
species (P. pedicellatus, Mast.), also distributed with Drége 82, but 
is distinguished by the sheaths and especially by the bracts. 
R. PEDICELLATUS, sp. n. Culmis pedalibus, cespitosis, erectis, fili- 
formibus, teretibus, rigidis, simplicibus, flavidis, tuberculis obsitis, basi 
spatium pollicare vaginis ellipticis coriaceis castaneis striatis impresso- 
punctulatis sub apice retuso pallidiore subulato-mucronatis (mucrone 
sæpissime in folium elongatum lineare producto) obtectis; vaginis 
culmeis remotis, arctis, semipollicaribus, fuscis, striatis, sub apice emar- 
ginato membranaceo plerumque foliaceo-mucronatis ; spiculis in apice 
culmi solitariis vel binis, erectis, juvenilibus cylindraceo-lanceolatis, 
demum oblongis, plurifloris (3-4 lin. long., 1-2 lin. lat.); bracteis 
primum arcte demum laxe imbricatis, oblongo-acutis, coriaceis, cas- 
taneis, sub apice obtuse mucronulatis, flores oblongos pedicellatos 
superantibus; glumis externis rigidiusculis, oblongo-obtusis, latera- 
libus conduplicatis, ad carinas glabris; glumis internis parum brevi- 
oribus, hyalinis; filamentis linearibus, albidis; antheris linearibus, 
flavidis, exsertis; pistilli rudimento minuto; staminodiis ligule- 
formibus; ovario trigono, abortu biloculari, castaneo, angulis salien- 
tibus viridescente, stigmatibus tribus coronato; capsula rotundata, bi- 
loculari, dehiscente, stigmatum vestigiis superata. 
Hab. C. B. S. Ex.sp.s. d. Drége, 1629!; 9. nn. 82! (pro parte), 
91! 
This differs from R. Sonderianus especially in the oblong ob- 
tuse glumes, which are provided with a very short * mucro;" the 
