PLANT NOTES FOR 1913, ETC. 



343 



2461. Typha angustifolia L., forma interrupta. Wilstone 

 Reservoir, Herts, Sept. 1913. Female spikes divided into two or 

 three masses with short naked spaces between. Growing with the 

 type. G. C. Druce. 



2461. T. angustifolia x latifolia = T. glauca Godr. Fl. Lorr. 

 iii., 20, 1843, with both assumed parents near Peakirk, Lincoln S., 

 Aug. 1913. G. C. Druce. 



2476. Alisma Plantago-aquatica x Echinodorus Ranuncu- 

 loides. Near Holland Arms, Anglesey ; Tuam, Ireland. Hugo 

 Gluck in Beihefte zum Botanischen C entralblatt, xxx., Heft 2, 124, 

 1913. 



2641 (2). Setaria gracilis H. B. K. Nov. Gen. et Sp. 1, 109. 

 Alien, New Granada. Galashiels, Selkirk, 1913, Miss Ida M. Hay- 

 ward. 



2647. Homalocenchrus vel Leersia oryzoides Sw., sub-var. 

 patens (Wiesb.). Plant with protruding panicle. See Rouy Fl. Fr. 

 xiv., 3, 1913. Arnberley Wild Brooks, Sussex. G. C. Druce. 



2666. Alopecurus geniculatus L., var. natans Wahl. Fl. 

 Lapp. 22. Culmo natante, spica minore. Marsh Gibbon, Bucks. 

 A form rather than a true variety. G. C. Druce. 



2684. Agrostis alba L., var. condensata Hackel. A curious 

 form with hypertrophied glumes, owing to a nematod infecting the 

 ovary, growing near the type at Aldeburgh, Suffolk, 1913 = conden- 

 sata Hackel. Probably is synonymous with, and replaces var. coarctata. 

 G. C. Druce. 



2684. Agrostis alba L. forma densissima Hack. A very 

 critical form which looks like a hybrid of A. alba x verticillata, 

 having the panicle of A. verticillata and the spikelets of A. alba (teste 

 Hackel). A. verticillata grows within a short distance. Guernsey, 

 Aug. 1913. G. C. Druce. 



Gen. 653 (2). Chaeturus Link in Schrad. Journ. ii., 313, 1799. 

 2689 (5). C. fasciculatus Link. In a field of lucerne near 

 Slinfold, Sussex, June 1913, A. Webster, vide spec, The first speci- 



