NEW EAST AFRICAN CYPERACE^. 225 



6-nucigeraB, saturate rubrse ; rhachilla infra glumam imam nuci- 

 feram secedens, alis late oblongis, hyalinis. Antherae lineares, 

 ecristatae. Stylus linearis, nuce brevior; rami 3, lineares, cum 

 nuce sub^quilongi. Nux cum ^ parte glum^e aequilonga, late 

 oblonga, sub^equaliter trigona, atro-rubra ; cellulie extimje liexa- 

 gonae (nux "reticulata"). Sp. M. leptophtjllo, forsan affinis. 

 Hab. Nagut Flumen, alt. 2000 metr. 



Mariscus psilostachys, sp. u. Undique microscopice pubescens. 

 Culmus 4 dm. longus, mediocris, apice levis triqueter, basi a vaginis 

 scariosis (in fibrillas solubilibus) incrassatus. Folia omnia sub- 

 basalia, usque ad 14 cm. longa, 4 mm. lata, debilia, flexuosa. 

 Bracteae 3-4, cum foliis consimiles, ima usque ad 9 cm. longa. 

 Umbella 5 cm. lata, 4 cm. alta, subsimplex, densiuscula. Spicae 

 rhachis 12 mm. longa, microscopice pilosula, 20-stachya, basi non 

 bracteata. Hpiculae 8 mm. longae, 1 mm. in diam., 5-nucigerae, 

 intensius rubro-brune^ ; rhachilla infra glumam imam nucigera 

 secedens, alis oblongis scariosis. Gluma remotte, parvje, proventu 

 suberectffi, ovat^e obtusae, multistriatae, vix carinatae, sparsim minute 

 setoso-pilosfe. Stylus linearis, brevis ; rami 3, longi, tenues. Nux 

 cum f parte glumie aequilonga-, anguste oblonga pauUo curvata, 

 subaequaliter trigona, brunea ; cellule superficiales hexagonae (nux 

 inconspicue "punctato-reticulata"). Sp. M. vestito affinis. 



Hab. Njoro. 



Mariscus globifer, sp. n. Glabra. Culmus 3 dm. longus, 

 mediocris, apice trigonus, levis, basi a vaginis multum incrassatus 

 15 mm. latus, ovoideus. Folia plura, omnia subbasalia, usque ad 

 1 dm. longa, 2 mm. lata, debilia, in sicco convoluta. Bractete 4, 

 pendentes, cum foliis consimiles, ima 8 cm. longa. Caput 1, exacte 

 globosum, 15 mm. in diam., stramineum, spiculis innumerosis, 

 undique stellatis, densissime stipatum. Spicule 5-6 mm. longae, 

 I" mm. latfe, subteretes, 5-6-glum^, sesquiflor^, flora inferiore 

 perfecto, superiore masculo. Glumt^ distantes, nucigera oblonga 

 obtusa, ecarinata, fere estriata, convoluta pertenuis. Antherte 

 lineares, ecristatae. Stylus linearis ; rami 3, pertenues, lineares, 

 longi. Sp. (ex exemplo juvenili) M. remoto affinis. 



Hab. Athi. 



Mariscus Gregorii, sp. n. Glabra. Radices fibrosffi. Culmus 

 3 dm. longus, crassus, rotundus apice trigonus, levis, basi ob 

 vaginas incrassatus, propagine laterali suberecto. Folia 14, omnia 

 subbasalia, usque ad 11 cm. longa, 7 mm. lata, plana, crassa, dura 

 sublucida, valide multistriata. Bracteaj 6, ima usque ad 7 cm. 

 longa, cum foliis consimiles. Umbella 4 cm. lata, 3 cm. alta, 

 densa, 6-radiata ; spica3 densiuscule 16-22-stachyag, spicatae, basi 

 ebracteatae. Spicule 1 cm. longae, 2-3 mm. latae, compressae, 

 8-10-florffi, stramineo-albi^, moUiusculae. Glumae 3-4 mm. longae, 

 ovato-ellipticae, obtusfe, leviter O-nervosre vix carinat^, rhachilla 

 infra glumam ima fructifera secedens, alis conspicuis ovatis 

 scariosis. Antherae lineares, ecristatae. Stylus tenuis, brevius- 

 culus ; rami 3, longae, lineares. Nux fere 2 mm. longa, lineari- 

 oblonga, «qualiter trigona, e bruneo fusee nigrescens ; cellulae 



Journal of Botany. — Vol. 34. [May, 189G.] q 



