NEW EAST AFRICAN CYPERACEiE. 225 6-nuciger8e, saturate rubras ; rhachilla infra glumam imam nuci- feram secedens, alis late oblongis, hyalinis. Antherae lineares, ecristatse. Stylus linearis, nuce brevior; rami 3, lineares, cum nuce subsequilongi. Nux cum J- parte glumse sequilonga, late oblonga, subaequaliter trigona, atro-rubra ; cellulse extimse hexa- gonae (nux "reticulata"). Sp. M. leptophyllo, forsan affinis. Hab. Nagut Flumen, alt. 2000 metr. Mariscus psilostachys, sp. n. Undique microscopice pubescens. Culmus 4 dm. longus, mediocris, apice levis triqueter, basi a vaginis scariosis (in fibrillas solubilibus) incrassatus. Folia omnia sub- basaiia, usque ad 14 cm. longa, 4 mm. lata, debilia, flexuosa. Bractese 3-4, cum foliis consimiles, ima usque ad 9 cm. longa. Umbella 5 cm. lata, 4 cm. alta, subsimplex, densiuscula. SpicaB rhachis 12 mm. longa, microscopice pilosula, 20-stachya, basi non bracteata. Spiculse 8 mm. longae, 1 mm. in diam., S-nuciger^, intensius rubro-bruneae ; rhachilla infra glumam imam nucigera secedens, alis oblongis scariosis. Glumae remotaB, parvae, proventu suberectae, ovatae obtusae, multistriatae, vix carinatae, sparsim minute setoso-pilosae. Stylus linearis, brevis ; rami 3, longi, tenues. Nux cum f parte glumae aequilongae, anguste oblonga pauUo curvata, subaequaliter trigona, brunea ; cellulae 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. Bracteae 4, pendentes, cum foliis consimiles, ima 8 cm. longa. Caput 1, exacte globosum, 15 mm. in diam., stramineum, spiculis innumerosis, undique stellatis, densissime stipatum. Spiculae 5-6 mm. longae, I" mm. latffi, subteretes, 5-6-glumaB, sesquiflorae, flore inferiore perfecto, superiore masculo. Glumae distantes, nucigera oblonga obtusa, ecarinata, fere estriata, convoluta pertenuis. Antherae lineares, ecristatae. Stylus linearis ; rami 3, pertenues, lineares, longi. Sp. (ex exemplo juvenili) M. remoto affinis. Hab. Athi. Mariscus Gregorii, sp. n. Glabra. Radices fibrosae. Culmus 8 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. Bracteae 6, ima usque ad 7 cm. longa, cum foliis consimiles. Umbella 4 cm. lata, 3 cm. alta, densa, 6-radiata ; spicae densiuscule 16-22-stachyae, spicat^, basi ebracteat^e. Spiculae 1 cm. longae, 2-3 mm. latae, compressae, 8-10-florge, stramineo-albae, moUiusculae. Glumae 3-4 mm. longae, ovato-ellipticae, obtusae, leviter 9-nervosae vix carinatae, 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, aequaliter trigona, e bruneo fusee nigrescens ; cellulae Journal of Botany. — Vol. 34. [May, 1896.] q
