BROMUS 593 



B. commutatus when they are in the flowering condition ; namely, in B. com- 

 mutatus the upper pales are shorter than the inferior, in B. secalinus they are 

 longer than the inferior pales. 



B. commutatus is found in all the bordering counties. 



B. hordeaceus, Linn. Sp. PI. 77 (1753"), and Herb. Soft Brome Grass. 

 B. mollis, Linn. Sp. PI. ed. 2, 112 (1762). Serrafalcus mollis, Pari. PI. 

 Ear. Sic. fasc. ii. 14 (1840). S. hordeaceus. 

 Top. Bot. 501. Syme, E. B. xi. 169, t. 1804. Nyman, 823. Fl. Oxf. 346. 

 Native. Pascual, &c. Meadows, waysides, cultivated and waste 

 ground and fallow fields. Abundantly distributed through the 

 county. A. or B. May- August. 

 First record. B. mollis. Little esteemed as a grass, and noxious in 

 cornfields, Mavor's Agr. Berks, 1809. 

 Var. GLABRESCENS (Coss. Fl. Env. Paris, 654, 1845, sub B. mollis) = 

 B. racemosus, Parnell, Grasses Scot, iir, not of Linn. B. mollis leiostachys, 

 Fries, Summ. Veg. Scand. 76. 



Less frequent on the whole than the type, but on the Chalk often in 

 considerable cjuantity ; it is usually a smaller and more graceful plant. 

 1. Isis. Binsey, but in Berkshire. Wytham. Lechlade. 2. Ock. 

 Hinksey. Blewbury. Upton. Cholsey. Wantage. Letcombe 

 Bassett. Blewburton Camp, the author in Rep. of Bot. Exch. Club, 

 1888. Unwell Wood, Herh. Oxf. 3. Pang. Compton. East 



Ilsley. Bradfield. Bucklebury. Beenham. Yattendon. Mouls- 

 ford. Basildon. Sulham. Rather common in this district. 

 4. Kennet. West Ilsley. Peasemore. Lambourn. Hunger- 

 ford. Aldermaston. Padworth. Theale. 5. Loddon. Hurley., 

 Bisham. Twyford. Wargrave. Aston Ferry. Maidenhead. 

 Cookham. 

 A form {oralis) with smaller and more oval spikelets is the B. mollis, 

 var. ovalis, Parnell, I.e. 258, t. 117. 



B. hordeaceus is common in all the bordering counties. 



B. interruptus, Druce in Pharm. Journ. Suppl. Oct. 5 (1895), Journ. 



Bot. Dec. (1895), and in Linn. Soc. Journ. 1896) 426-30. 

 B. mollis, var. inierrupta, Hackel in Rep. of Exch. Club (1888), 240. 



Serrafalcus interruptus. 

 Native or colonist. Agrestal. Cultivated fields, very local, but abundant 



when it occurs. B. or P. May-June. 

 First found by the aiithor and recorded as B. mollis, var. interruptus, in 



the Rep. of Exch. Club for 1888. 



2. Ock. Very abundant in a field of seeds near Ujjton. 



3. Pang. In a field on the Chalk between Blewburton Camp and 



Unwell Wood, July, 1888. In an<ble field near Moulsford. 

 Among ' seeds ' near Streatley. 



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