:)2Q ADDENDA. 



I have not seen a specimen of this; it is stated to be allied to M. longijpes, Mart., 

 but easily distinguished by its shorter peduncles. 



1. Medemia Argun, P. G. von Wilrtteynherg. Add: Areca? 

 Passalacqicce, Kunth. in Ann. Sc. Nat. 1 ser. viii. 420; Hemsley in 

 Nature, xxviii. (1883) 111. 



oa. Aponogeton hereroensis, Schinz in Bull. Herb. Boiss. 2, 

 ser. i. 7<)J^. A small plant arising from a thickened base. Leaves 

 petiolate, about o in. long, either narrowly linear, 1 lin. or more broad 

 and gradually tapering at the base, or oblong-elliptic, 5 lin. broad and 

 suddenly contracted at the base, flaccid, acute. Spikes 9 lin. long, 

 dense-flowered. Male flowers not seen. Female flowers : Petals 

 broadly elliptic, 1 J lin. long, 1 lin. broad, white, delicate. Carpels G ; 

 styles about 1 lin. long ; stigmas brown. 



ZiO\irer Cruin'ea. Girnian South-west Africa: Hereroland; pool east of Wind- 

 hoek, Dinter, 589, plain north of Waterberg, Dinter. 



2ba. Kyllinga Filiciila, C. B. Clarke. Glabrous. Roots fibrous. 

 8tem 1 ft. long, thread-like, not thickened at the base. Leaves thread- 

 like, one as long as the stem. Head of 1 globose white spike, J in. in 

 diam., of about 12 spikelets ; lower bract as if continuing the stem, 

 3 in. long, thread-like ; upper bract f in. long, pendent, thread-like. 

 Spikelets each perfecting one nut. Nut-bearing glume ovate, hardly 

 acute, strongly nerved, not scabrous on the wingless keel. Nut flat, 

 round, ellipsoid. 



XiO-wer Crulnea. Lower Congo: Kisantu; on the Inkissi lliver, Gillet, 439 ! 



12a. Pycreus chorisanthus, C. B. Clarke. Annual. Stems 

 4-8 in. long, very slender. Leaves long, very slender. Umbel of spikes 

 simple, rays 1-4, up to If in. long ; bracts 3-4, very slender, lowest 

 ;>-8 in. long. Spikelets 3-6 in a spike, \ by y\ in., 6-flowered, very 

 flat, green to yellowish. Glumes standing far apart, keeled, mucronate. 

 Style (including its two branches) much shorter than the nut. Nut \ 

 the length of the glume, unequal-sided, oblong-obovoid, flattened, dark 

 brown ; outermost cells subquadrate. 



IiO'wer Cruinea. German South-west Africa : Hereroland, Dinter I 

 The examples seen were raised in the Zurich Botanic Garden. The species is 

 allied to P. pumilus, Nees (i.e. Cyperus hyalinus,\Q\\\), but the spikelets and glumes 

 are much smaller. 



4a. Mariscus oblougi-nux, C. B. Clarke. Glabrous. Basal 

 bulbs large, ovoid, in clusters. Stems 15 in. long, rather stout. Leaves 

 4_8 by \ in. Inflorescence of one ovoid dense pale head, |-| in. in 

 diam.; bracts 3-4, lowest 1-2 in. long. Spikelets very numerous, per- 

 fecting 1 or 2 nuts. Flower-glume straw-coloured, J in. long, thin, 

 ovate-oblong. Nut ^^ in. long, oblong ; style short, branches 3, very 

 delicate. 



X^ozaznb. Bist. British Central Africa : Nyasaland ; Namasi, Cameron, 90! 



