Airu.] TRIANDRIA DlGYNiA. 37 



Straight inserted near the base of, and not exceeding in length, 

 the corolla. E. Bot. t. 1432. — Deschumpsia, Beauv. 



Moist shady places, ami borders of fields, plentiful. Fl. June — Aug. 

 If- — Much tufted. Culms 2 — 4 feet high. Leaves linear, acuminate, 

 rough at the margin. Panicle large, silvery-grey or greenish, much 

 branched. Spikelets acule. Cal. valves unequa.\, lanceolate, subglabrous, 

 rather acute, eruse. Florets with a few longish hairs at the base, upper 

 ones pedunculated ; their valves ovate, obtuse, erose, the outer one 

 with 5 short teeth, the inner bifid. Mr Wilson finds it on Snowdon, 

 viviparous, with the awn inserted above the middle of the valve ; and 

 at Llanberris with a small panicle and purple florets. 



S. A. alpina, L. (^smooth alpine Hair-grass); panicle subcoarc- 

 tate, branches and pedicels perfectly smooth, florets villous at the 

 base as long as the calyx, awn inserted above the middle and 

 scarcely exceeding the cor. in length, leaves linear. — E. Bot. t. 

 2102 (A. laevigata). 



Moist rocks on the higher Scottish mountains and in Wales, and often 

 viviparous. Fl. June, July. 1^. — About 1 foot high, very smooth. Leaves 

 only scabrous to the touch on the upper side, short. Panicle rather 

 small, branches erect ; the lower ones, when viviparous (which they 

 mostly are) patent aud even drooping. Spikelets not numerous, larger 

 than in A. ccespitosa, and more resembling, as does the whole plant, A. 

 jiexuosa. Cal.-valves equal, quite smooth. Florets with a short tuft 

 of hairs at the base : upper one not pedicellate. Valves of the cor. lan- 

 ceolate, acute, not compressed. — In A. atropurpurea, Wahl. the pani- 

 cle is fewer flowered, and the florets are considerably shorter than the 

 calyx. 



4. A. Jiexuosa, L. (waved Hair-grass); panicle (when flower- 

 ing) dift'use, florets villous at the base as long as the cal., awn 

 jointed inserted near the base of, but much longer than, the cal., 

 leaves setaceous. E. Bot. t. 1519. 



Heaths and hilly places ; abundant. Fl. July. 1^ . — Habit of the last, 

 but taller. Florets larger and the awns protruded considerably beyond 

 the calyx. Valves of tlie cor. as in the two last species. 



5. A. canescens, L. {grey Hair-grass) ; panicle rather dense, 

 florets shorter than the calyx, awn clavate shorter than the 

 calyx, leaves setaceous. E. Bot. t. 1190. — Corynephorus, Beauv. 



On the^sandy sea-coasts of Norfolk and Suffolk. Jersey ; Christy and 

 Babington. Fl. July. 1^ . — Remarkable in this genus for having its awn 

 clavate, and bearing, at the joint, a tuft of hairs. 



6. A. caryojihyllea, L. (silvery Hair-grass); panicle divaricated, 

 florets scarcely villous at the base shorter than the cal., awn in- 

 serted below the middle jointed longer than the cal., leaves seta- 

 ceous. E. Bot. ^ 812. 



Gravelly hills and pastures, frequent. Fl. June, July. 1|. — 2 — 6 or 

 8 inches high. Leaves short, few. Panicle trichotomous. Florets silvery 

 grey. Cal.-valves nearly equal, lanceolate, the upper part pellucid and 

 white. Valves of the cor. scabrous at the back, unequal, apex bifid. 



7. A. prdcoxj L. (early Hair-grass); panicle somewhat spik- 

 ed, florets scarcely villous at the base about as long as the cal., 



