110TTB0LLIA. 



erecL Glume of the calyx fword-fhaped, deeply divided. 

 Stipula elongated, lanceolate, obtufe, jagged. — Native of 

 the fouth of Europe. Much more flender than the former, 

 with a purplim^/ftm, and fmaller, rougher, channelled leaves. 

 Florets more crowded together. This is certainly what 

 Linnaeus had in his herbarium for Nardus gangitis, when he 

 defcnbed that plant in his Sp. PI. ed. I. 53, though the 

 mark of a crofs indicates that he had lome doubts concerning 

 it. Thofe doubts arofe from the fynonyms quoted in the 

 Sp. PI. which have nothing to do with the grafs before 

 us. Their hiftory may be found in Tranf. of Linn. Soc. 

 v. 1. 116. 



3. R. cylindrica. Stout Hard-grafs. Willd. n. 3. 

 (Gramen loiiaceum junceum majus ; Barel. Ic. t. 5. G. 

 loliaceum, fpicis articulofis ere&is ; Mont. Gram. 43. f. 28. 

 G. myuros, &c. ; Bocc. Muf. 70. t. 59.) — Spike round, 

 awl-fhajsed, (lightly curved. Glume of the calyx undi- 

 vided. — Native of the fouth of Europe. This appears to 

 be of a ftouter habit than even the firlt fpecies, but we know 

 nothing of it, except from the authors quoted. Monti fays 

 it differs from R. incurvata in having the glume of the calyx 

 undivided. 



4. R. Thomta. Moufe-tail Hard-grafs. Willd. n. 4. 

 Roxb. Corom. v. 2. 17. t. 132. ( R. pilofa ; Willd. 11. 7. 

 Nardus Thomrea ; Linn. Suppl. 105.) — Spike linear, com- 

 prefled, nearly flraight. Florets imbricated, in two rows. — 

 Gathered by Koenig on the mountain of St. Thomas in 

 Tranquebar. A fmall, glaucous, denfely tufted grafs, 

 whofe leaves are fringed with long hairs. Spikes folitary on 

 each item ; their common ftalk zigzag at each of the flat 

 fides of the fpike, but not perceptibly jointed. Florets im- 

 bricated clofely, in an alternate order, along each edge of 

 the fpike. Glume of the calyx keeled, undivided, a little 

 recurved at the point. 



5. R. repens. Creeping Hard-grafs. Forft. Prodr. 9. 

 Willd. n. 5. (Lepturus repens ; Brown Prodr. Nov. Holl. 

 v. 1. 207.) — Spike round, awl-fhaped. Glume of the 

 calyx undivided. Sheath of the leaves bearded at the top. 

 Root creeping. — Native of the South Sea iflands, and the 

 tropical part of New Holland, on fandy fea-fhores. 

 Branches afcending. Leaves imperfectly two-ranked, 

 ftraight, linear, rather involute ; their (heaths bearded, with 

 fcarcely any vifible Jlipula. Spite thread-fhaped, acute, 

 beardlefs ; its joints feparable. Glumes of the calyx pointed, 

 longer than their correfponding joints. Brown. 



6. R. Ixvis. Smooth Hard-grafs. Retz. Obf. fafc. 3. 

 1 1 . Willd. n. 6. — Spike cylindrical. Joints two-flowered. 

 Glumes of the calyx oblong, obtufe, undivided, very fmooth, 

 the length of the joint. — Native of Tranquebar. Roots ap- 

 parently perennial, with (Irong fibres. Stems afcending, a 

 foot or more in height, fcarcely branched, leafy. Leaves 

 denfely tufted at the root, (hort, broad and flat, fmooth ; 

 their (heaths denfely bearded, without any membranous 



Jlipula: Item-leaves fhort, diflant, with long (heaths. Spites 

 terminal, folitary, credt, three or four inches long, pale, 

 fmnoth, each joint furrowed, with two lateral, mil quite 

 oppolite, hollows. Glume of the calyx very fmooth and 

 even like ivory, with an obtufe, oblique, grccnifh point, 

 and a little furrowed at the very bafe. 



7. R. comprejfa. Flat-fpiked Hard-gra(s. Linn. Suppl. 

 114. Willd. n. 8. Retz. Obf. fafc. 3. 12. Roxb. Co- 

 rom. v. 2. 30. t. 156. (Hemarthria comprefia ; Brown 

 Prodr. Nov. Holl. v. 1. 207.) — Spike comprefled, awl- 

 fhaped, incompletely jointed. Joints two- flowered. Outer 

 glume of the calyx undivided; the points of all the glumea 



(kraight. — Native of the Eaft Indies, Chin2, and New South 

 Wales, about ponds. Stems comprefled, leafy. Leaves 

 fmooth, naked, with comprclled (heaths. A flalkcd tuft 

 of /piles, accompanied by a leafy involucrum, fprings from 

 the upper (heaths. Calyx of two valves; one of them in- 

 ternal. 



8. R. uncinata. Hooked Hard-grafs. (Hemarthria 

 uncinata ; Drown Prodr. Nov. Holl. v. I. 207.) — Spika 

 comprefled, awl-fhaped, incompletely jointed. Joints two- 

 flowered. Outer glume of the calyx undivided ; the point 

 of the inner one hooked. — Gathered by Mr. Brown in the 

 ifland of Van Diemen. 



9. R. hirfuta. Great Hairy-fpiked Hard-grafs. Vahl. 

 Symb. fafc. 1. 11. Willd. n. 9. (Triticum aegilopoides ; 

 Forfk. ^Egypt-Arab. 26.) — Spike awl-fhaped, very hairy. 

 Calyx of the perfect florets fpreading ; of the male ones 

 elofe-prefTed. Stem angular in the upper part. — Native of 

 Egypt ; not unfrequent about Alexandria, flowering in 

 March. We have fpecimens from Dr. Delile, who informs 

 us that a figure of this grafs is deilined for the great 

 work, defcriptive of Egypt, part of which has already ap- 

 peared at Paris. The Jlem is branched, rigid, about two 

 feet high, leafy, jointed, the upper joints angular, being 

 flattened at one fide, ltriated, a little roughilh. Leaves 

 involute, rigid ; their (heaths fmooth, ftrongly furrowed, 

 crowned with a tuft of hairs ; the upper ones fomewhat in- 

 flated. Spite folitary, partly enveloped in the uppermoll 

 fheath, about three inches long, rather comprefled. Glumes 

 lanceolate, taper-pointed, emarginate, clothed externally 

 with copious, long, white hairs. 



10. R. Cymlachne. Boat-valved Hard-grafs. Willd. 

 n. 10. (Cymbachne ciliata ; Retz. Obf. fafc. 6. 36.) — 

 Spikes in pairs, flowering at one fide only. Calyx of the 

 perfect florets with an inner, boat-like glume. Leaves 

 fringed at the bafe. — Found by Koenig in Bengal. A 

 (lender grafs, a foot high, with feveral, fimple or branched, 



Jlems ; the latter bearing one leaf, the others leaflefs. Leaves 

 fhort, thin, fringed at the margin, above the fheath, with 

 long, white, feparate hairs ; (heath abrupt, pale-brown at 

 the fummit, fringed. Spites terminal, in pairs, linear, an 

 inch and a half long, fome confiding of perfeft, the others 

 of female, flowers. Common Jl all linear, membranous, flat 

 at the back, with three longitudinal furrows ; zigzag, with 

 alternate hollows, in front. Calyx of the perfeS flowers of 

 two valves, fingle-flowered, both of them parallel and ex- 

 pofed to view, clofe-preffed to the common ftalk, or re- 

 ceptacle ; the outermoll valve linear, obtufe, fringed at the 

 back ; innermoft half-ovate, acute, boat-fhaped, greatly 

 comprefled, ltriated, coloured, fringed at the back, in- 

 clofing the corolla. Anthers and fligmas black. Female 



flowers with a fingle-valved, clofe-prelled, ovate, fringed 

 calyx, (lightly cloven at the point. Corolla and Jlamens 

 wanting. Stigmas longer than in the former. Retzius. 



11. R. Coelorachis. Hollow-flalked Hard-grafs. Forft. 

 Prodr. 9. Willd. n. II. — "Spike round, flowering at one 

 fide only. Florets in pairs ; one of them (talked. Calyx 

 of two valves." — Native of the ifland of Tanna. We have 

 fecu no fpecimen. Mr. Brown mentions this as one of the 

 few certain Rottbolliie, according to his own drift limitation 

 of the genus. We prefume, from the name, that Forftei 

 had originally confidcrod this plant as conllitiiting a diftincl 

 genus ; and that he named it 111 alluiion to the hollows of the 

 common receptacle ; which, nevcrthclels, are proper to 

 Rottbollia. 



12. R. dimidiata. Half-fpikcd Hard-^rafs. Linn. 

 Suppl. 114, excluding the fynonym. Willd. n. 12. — Spik' 



4 K 2 comprefled. 



