206 XXVIII. GRAMiNE/E. [Colamagrostis 



i-eaching 1 ft. in length, 'I in. across, branches 2i in. long or 

 shorter ; pedicels 1 line or less in length ; lower barren gl. If line 

 long, upper about \\ line ; fertile gl. a little over 1 line ; anthers 

 H line. 



An interesting species with the habit of Agrostis, recalling some 

 effuse forms of A. alba L. It is placed in Calmnagrostis owing to 

 the tuft of hairs on the callus almost equal in length to the glume, 

 but is one of those species which connect the two genera. It 

 is most nearly allied to C. tenella Host, which, however, has a 

 shorter-haired callus and an awned flowering glume. 



Huii.LA. — In thicket-grown marshes near Catumba ; April 1800, 

 Xo. 2629. 



34. POLYPOGON Desf. ; Benth. k Hook. f. Gen. PI. iii. p. 11 50. 

 1. P. monspeliense Desf. Fl. Atl. i. p. 67 (1798); Steud. Syn. 



PI. Gram. p. 184 (1854); Durand& Schinz, Consp. Fl. Afr.v.p, 825. 

 MossAMEDES. — Showing little or no difEerence from specimens from 

 Southern Europe, Syria, Abyssinia, Ceylon. New Orleans, Chili and the 

 Cape. Damp sandy places on the banks of the river Caroca near Cabo 

 Xegro ; beginning of Sept. 1859. No. 2619. In small woods of 

 Tamarix galliai, species of Acacia and Cardia, near the banks of the 

 river Maiombo at Pedra do Rei ; Oct. 1859. Xo. 2618- Annual, with 

 a very fibrous root, widely ctespitose, with many prostrate-ascending 

 or obliquely erect, long-sheathed culms, leaves flat, ligule large, torn at 

 the top, inflorescence yellow-purplish. Plentiful in sandy places on 

 the banks of the river Bero near Cavalheiros : 22 Aug. 1859. X^o. 2820. 



Subtribe III. Sjjoroholece. 



35. SPOROBOLUSPv.Br.; Benth.&Hook.f.Gen.Pl. iii.p.ll48. 



1. S. robustus Kuuth Rev. Gram. p. 425, t. 126 (1829-35); 

 Benth. in Plook. Niger Fl. p. 564 (1849); Durand A: Schinz, 

 Consp. Fl. Afr. v. p. 823. 



Vilfa robusta Steud. Syn. PI. Gram. p. 154 (1854). 



Island of St. Vixcknt, Cahe Yerde Is.— Near Porto Mindello : 

 Sept. 1853. Xo. 2923. 



LuANi).\. — A fine widely ctespitose grass 2 to G ft. high, culms 

 ascending, geniculate, branched, nodes purplish, the lower sending out 

 roots ; spikes whitish. Sandy places by the sea near Cabo Lombo ; 

 30 April 1854. Xo. 7351. Plentiful in rather damp places round 

 ponds near Imbondeiro dos Lobos ; May 1864 and 1868. X"o. 7294. 

 No. 7357 (no information). 



BEN(i().— On the river Bengo near Porto Rei ; not in good fl., Dec. 

 185.3. Xo. 7450. 



MossA.MEDBS. — 4 to I) ft. high, very densely ca;spitose, rigid, very 

 rough, culms sometimes straight, sometimes oblique ; panicles pyramidal. 

 It is this grass particularly which in company with Aruudo spl/iosa. 

 renders solid the soil at the mouth of the river Bero, and so makes 

 possible the culture of the gardens. Very plentiful on the banks of 

 the river Bero ; 11 Aug. 1869. No. 2296. 



2. S. pyramidalis Beauv. Fl. Owar. ii. p. 36, t. 80,fig. 1 (1816-18); 

 Benth., I.e., p. 565 ; Durand & Schinz, I.e. 



Vilfa pyramidalis Steud., I.e., p. 155. 



