Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/246

 224 NEW EAST AFRICAN CYPERACEJl. By C. B. Clakke, F.R.S. I HAVE provided Dr. Gregory with a list of the Cyperacem collected by him in his Kenia Expedition. Among them are seven which I have not been able to refer to any known species ; of these diagnoses follow. Juncellus minutus has not the nut flattened on its anterior face, and is perhaps allied to the very small group of African Cy perns which have the three branches of the style reduced, very small, or obsolete. Mariscus 2)silostachys differs from nearly the whole of that large genus in being minutely hairy all over. M. glohifer may be not distinct from M. remotus, but the flowers are quite young, and I have not here M. remotus for comparison. Pycreus debilissimus, sp. n. Glabra, debihssima. Radices fibrosse, tenues. Culmi 8-14 cm. longi, tenuissimi. Folia pauca, omnia sub-basalia, cum culmo subsequilonga, setacea, flaccida, debilissima; vaginae membranaceae, scarioso-bruneae. Bractese 2, cum foliis consimiles, ima 6 cm. longa. Caput 1, 8-stachyum. Spiculae sessiles, compresses, castaneae, 10 mm. longae, 2 mm. latae, 20-flor8e ; rhachilla persistens, subexalata. Glumae arete imbri- catae, duriuscul^, naviculares vix apiculat^. Stylus brevis ; rami 2, lineares, oblique in piano per rhachillam spiculae transeunte. Nux lateraliter compressa, parvula, obovoidea, nigro-brunea, cum I parte glumae aequilonga; cellulae superficiales longitudinaliter oblongae, magnae, irregulariter sitae (nux non transversim undulato- lineolata). Sp. P. elegantulo affinis. Hab. Tana. Juncellus minutus, sp. n. Glabra. Culmi 2-4 cm. longi, leves, trigoni, basi minute bulboso-incrassati, radicibus lentis. Folia omnia basalia, pauca, 2-3 cm. longa, 1 mm. lata, debilia, viridia. Bracteae 2, cum foliis consimiles, ima 25 mm. longa, sub- erecta. Caput 1, 8-stachyum. Spiculae 4 mm. longae, 1 mm. latae, compressae, rubro-maculatae, 6-nucigerae. Glumae arete imbrieatae, naviculares, carina viridi in mucronem fere excurrente ; rhachilla subquadrata, alls angustis hyalinis, omnino Juncelli. Stamen 1 (saltern interdum) ; antherae ellipticae, parvulae, muticae. Stylus longus, pertenuis, apice breviter 2-1-fidus. Nux perminuta, ob- ovoidea fere subpyriformis, nigra, plano-convexa ; cellulae super- ficiales subquadratae, inflatae, lucidae. Species Cypero semitrijido Schrader forsan affinis. Cf. praesertim Schweinfurth n. 120, in Abyssinia (Kohaito, alt. 2650 metr.) lectum. Hab. Ongalea Montes ; alt. 800 metr. Mariscus concinnus, sp. n. Glabra. Culmus 25 cm. longus, tenuis, apice trigonus levis, basi vix (ob vaginas) incrassatus. Folia omnia basalia, usque ad 14 cm. longa, 3 mm. lata, debilia, flexuosa; vaginae vix scariosae neque inflatae. Bracteae 3-4, cum foliis consimiles, ima 5 cm. longa. Umbella simplex ; radii 3-1, usque ad 15 mm. longi. Spica e 2-4 spiculis laxius spicata, basi non bracteata. Spiculae 10 mm. longae, 2 mm. in diam., teretes,