50 ON FESTUCA HETEROPHYLLA. 



"Char. Dense caspitosa, innovationes pleraque intravaginales, 

 interjectis paucis extravaginalibus non repentibus. Lamina obtusa, 

 valde di formes, innovationum arete complicates, capillares, trigona, 

 superiores 3-nerves, intus depresse — 1-costata, fasciculis sclerenchy- 

 maticis 3-inferioribus instructs, absque cellulis bulliformibus, foliorurn 

 culmeorum multoties latiores, plana, 7-11-nerves, supeme elevato 

 5-7-costata, fascieulis sclerenchymaticis et superioribus singulis nervis 

 marginibusque correspondentibus, cellulisque bulbif omnibus instructs. 

 Ovarium apice hispidulum. 



" Descr. Culmi elati (ad 60 cm. et ultra), saepius 3-nodes, nodo 

 sumrno in % — i culmi sito, superne teretes, striati, laeves. Vagina 

 foliorurn innovationum trigones, laeves v. scaberulae, 3-5-nerves, 

 tenues, cito marcescentes, emarcidae fuscae, demum parce fibrosa. 



" Lamina innovationum 0.4 — 0.6 mm. diam., etiam vivae arete 

 complicate, longissimae, flaccida, molles, late virides, angulis plerum- 

 que scabrae, (saltern parte suprema), acute carinatte, sectione, trans- 

 versa deltoideae, foliorurn culmeorum 2-3 mm. latae, superne 

 pubescentes. Panicula major (6-16 cm. Ig.) ovata, laxiuscula, 

 antbesi patens, apice saepe nutans, rbacbi scrabra, ramis inferi- 

 oribus 2-3 nis, primario dimidia panicula plerumque longiore, a 

 ^-spiculiferis. 



" Spicules linear i- oblong a, 8-10 mm. Ig., remote 3-9-rlores, 

 virentes v. violaceo-variegataa. Glum a steriles inaequales v. sub- 

 a3quales, acutissima3, carina scabrae, Ilda subidato-lanceolata, 

 3-nervis, nervis lateralibus supra medium excurrentibus, ad f-f v. 

 ad apicem IVae pertinens, fertiles lineari-lanceolata 5 — 6, 5 mm. 

 Ig., longe acutatae, ad medium dorsum usque carinataB, costis 

 lateralibus 2 prominulis notatae, glabrae, versus apicem plerumque 

 scabrae, ex apice aristatae, arista glumam dimidiam sequans v. 

 superans, interdum totam aequans. Palea lineari-oblonga, apice 

 integra v. brevissime bidenticulata, carinis scabra " (page 130). 



Besides the typical form (that found in Britain), subvarieties 

 leiophylla, vulpioides (F. vidpioides Schur.), and pubenda are men- 

 tioned (p. 131). 



This may be a suitable opportunity for pointing out that the 

 Festuca list in the ' London Catalogue,' ed. viii., needs some 

 revision. There are two different plants under the one name 

 of F. loliacea Huds. ; and F. fallax, if retained as a species at all, 

 is of Thuillier, not of Hackel. Its reduction to a var. of rubra 

 seems, from an examination of specimens named by Dr. Hackel, 

 to be more agreeable to facts (vide Mon. p. 142). The census-number 

 of F. duriuscula auct. angl. (F. rubra, genuina, of Hack. Mon.). 

 appears to have been transferred bodily to fallax, which is, on 

 present knowledge, a decidedly rare British plant. Among a large 

 series of Surrey forms, I have not succeeded in discovering it ; and a 

 friend's experience was, I understand, the same. " Eu-rubra " will 

 doubtless prove to be common in every one of the 112 Watsoniau 

 vice-counties. Is anytbing definite known of F. dumetorum L. 

 (reduced in Hack. Mon. to a subspecies) as an English plant ? 



Festuca arundinacea Schreb., var. (nova) dubia (ad interim) 

 Hackel in litt. Dry slopes of the coast near Steephill, I. of Wight ! 



