266 Dtt. M. T. MASTEKS OX SOVTH-AI'HICAX KKSTIACK.E. 



albida, tenuissima. Antherce lineares, apiculatac, flavidse, filamenta 

 sequantes, inclusae. — Plantae feminese culmi vagineeque ut in mare. 

 SpicultB feminece in apicibus ramorum solitarise, 1-2-florse, 5-6 lin. 

 longae, sing, spatha coriacea, fusca, oblongo-lanceolata, setaceo-aiistata 

 munita;. Flos fertilis unicus, sessilis, spatha v. bractea 3-4-plo bre- 

 vier ; flos sterilis (si adest) pedicellatus, rudimentarius. Perianthium 

 biseriale, sexglume ; glumis subsequalibus, oblongo-ovatis vel spa- 

 tbulatis, subspongiosis, fuscis, nervo medio notatis, exlernis latera- 

 libuSy naviculari-conduplicatis. Ovarium subtrigonum. Styli 2, su- 

 perne plumoso-stigmatosi, demum decidui. Fructiis obovatus v, 

 subglobosus, indehiscens, osseus, ferrugineus, Isevis, unilocularis, 

 glumis persistentibus paulo longior. Semen unicum, ex apice loculi 

 pendulum. Albumen corneum. 



Practically it makes little difference whether the male inflo- 

 rescence be considered to consist of a single spikelet with three 

 or four flowerSj each provided with its sheathing bract, or 

 whether it be described as consisting of three or four distinct 

 1-flowered spikelets. From the size and ultimate fall of the 

 "bracts (spathes)3as well as from the distance between the flowers, 

 and the length of the axis between them, I have in the foregoing 

 description adopted the latter view. 



The florets are placed with their backs against the axis, the 

 outer lateral glumes being a little twisted to allow of the axis 

 fitting in between them. 



6. H. ? GRACILIS, sp. n. Culmis caespltosis, 1-2-pedalibus, teretibus, 

 versus medium dichotome ramosissimis; ramulis filiformibus, subfas- 

 ciculatis, compressiusculis ; vaginis arctis, elHpticis, coriaceis, striatis, 

 filaceo-aristatis ; spicuUs masculis in apicibus ramulorum sohtanis, 

 erectis v. patentibus, oblongis, spatha vaginiformi filaceo-aristata 



■ 



sufl*ultis; bracteis oblongis, mucronatis ; floribus vix corapressis : 

 feminea adhuc ignota. — Hypolsena gracilis, Nees MS. in herb. San- 

 der., absque descript. 



Hub. Pr. B. Sp. Ex. sp. s. J, Muisenberg, n. 4347, Zeyherl; Si- 

 monstadt, Zeyher, 1006 !, et C. Wright, 500 ! 



Radices fihformes, flexuosi. Culmi csespitosi, decumbentes, 1-2-pedales, 

 crassitie pennae corvinse, basi spatio 2-3-pollicari, vaginis arctis, co- 

 riaceis, striatis, fuscis, laceris, approximatis muniti, ad nodes m- 

 crassati, supeme remote vaginati, teretes, ohvacei, purpureo ma- 

 culati, obsolete tuberculati, striolati, infra medium dichotome ra- 

 mosi ; ramis erectis, iterum iterumque ramulosis ; ramulis subfasti- 

 giatis, compressis, filiformibus, elongatis. Vaginm culmea poUi- 

 cares, arete elliptical, aeutatge, coriacese, fuscte, striatse, purpureo 

 maculatsc, filHceo-aristatse; vaginm ramnlormn conformes nisi mag- 

 nitudinc uiinorc. Spicidcc ma^-cula: in apicibus ramulorum solitari«T, 



