61 
Bamboesbergen, referred to by Drége, are an extensive range of 
mountains along the boundaries of Molteno Division in the north 
and Craddock, Tarka and Queenstown Divisions in the south. 
There is another “ Bamboesberg” to the west of Tarkastad and 
near the Tarka-Craddock boundary. It also has its name pre- 
sumably from the occurrence of the same bamboo, in which case this 
mountain would mark the south-western limit of the area of 
Arundinaria eanbsce 2 
D 15-6 m, altus ; 
culmi_ basi ibs 8 mm. Shoes fistulosi—uti rami foliati graciles 
approximati—teretes, laevissimi, ramorum internodiis raro 5 cm, 
excedentibus. Vaainae ad ramorum bases ortae, laminis destitutae, 
scariosae vel subscariosae, striatae, laeves, caeterae coriaceae, 
arctae, leviter striatae, praeter margines exteriores superne 
ciliatos et ora fugaciter fimbriata glabrae; ligulae obtusae, 
plerumque breves, rarius ad 4 mm, productae ; laminae perfectae 
3-4, versus ramulorum apices approximatae, lanceolatae vel lineari- 
lanceolatae e basi attenuata vel rotundata, breviter acutae vel longe 
in acumen tenuissimum productae, 6-12 cm. longae, 9-14 mm. 
latae, coriaceae, interdum subglaucae, ad basin. parcissime 
Dasescenter, ad margines spinuloso-ciliolatae (juniores quidem), 
caeterum glaberrimae, nervis lateralibus primariis utrinque 
(rarius 4), ob as transversas approximatas et distinctas 
plerumque eximie benicar tessellatae. Racemi breves, circiter 
4—5-spiculati in ramis florentibus undique ex axillis foliorum 
emortuorum ortis vaginis albido-stramineis emarcidis angustis 
superne longe attenuatis eos saepe pale superantibus suffulti, cum 
vaginis foliorum annotinorum in amplam_ paniculam  spuriam 
dispositi.  Spiculae praeter imas ineelae bractea racemum 
aequante suffultas ebracteatae, breviter pedicellatae, 16-18 mm. 
longae, 2-florae; rhachilla producta, glabra, anthoecium imper- 
fectum gerens. Glumae aequales, lanceolatae, acuminatae, 
12-13 mm. longae, utrinque 5-nerves, venis transversis nonnullis. 
Valvae alatere visae suboblique lanceolatae, subacuminatae, 
14-15 mm. longae, virescentes, nervis serene 4-5, venis trans- 
versis numerosis conspicuis. Paleae 11-13 mm. longae, carinis 
superne asperis, nervis extracarinalibus utrinque 2-3, venis 
transversis tenuissimis nonnullis. Lodiculae 3 obovato-clliptiene, 
ciliatae, 2 mm. longae, postica paulo minor. Stamina 3; anther 
8 mm, longae. 
XI—NEW ORCHIDS: DECADE 33. 
. Octomeria arcuata, Rolfe; habitu O. sarcophyllae, Rodr., 
eo "Elis latioribus sodas eek aig floribus flavescentibus et 
labello trilobo purpureo-maculato diffe 
Herba caespitosa, 8-13 em. alta. "Ca aules subgraciles, 3-5 em 
longi, vaginis membranaceis vestiti. Folia subsessilia, lanceolata, 
acuta vel acuminata, subrecurva, crassiuscula, canalicu ata, 
longa, 1-1°5 em. ata, lores so olitarii, subpenduli, 1 em. Be: 
Pedicell 5 mm. longi. Sepala et petala oblonga, obtusa, subin- | 
curva, lem. longa. J,abellum trilobum, 7 mm, longum, recurvum ; 
