550 MR. C. BUCKNALL: A REVISION 
x S. discolor, Bucknall in Journ. Bot. 1. (1912) p. 332. 
Has. With the parents on banks of streams and margins of woods in the 
counties of Gloucester and Somerset. 
SPECIMENS EXAMINED: In Herb. Kew., Mus. Brit, Univ. Cantab., and 
Fielding. 
х S. CŒRULEUM, Petitmengin. (S. officinale a. ochroleucum x peregrinum.)— 
Habitus S. peregrini. Planta fere omnino sterilis. Caulis hispidus, asper, 
late sed incomplete alatus. Folia inferiora oblonga, in petiolum attenuata ; 
superiora lanceolata, a basi lata semidecurrentia. Calyæ in lacinias acutas 
divisus, Corolle детте тозе, apice virides, deinde corolla tota coerulea 
vel roseo-coerulea, apicibus loborum interdum flavidis. Anthere filamenta 
æquantes. Nuculæe (sæpissime abortivæ) tuberculatæ. 
S. cæruleum, Petitmengin in A. Thellung, Beiträge zur Kenntniss der 
Schweizerflora, viii. Separat, Dec. 14th, 1907, pp. 459—462. 
x 5. cæruleum, Petitmengin, Bucknall, l. e. p. 385. Conf. S. peregrinum, 
Ledeb. ; Bot. Mag. t. 6466 (1879). 
Has. Britain. Botanic Gardens of Zurich and Bristol University ; Sion, 
Switzerland, cult. ; Doumartemont, France. 
SPECIMENS EXAMINED : —$. acutum. Їп hort. Genev. cult. Juin, 1850. 
Huet de Pavillon. Herb. Cons. Bot. Genev.— S. officinale var. patens, 
Telford, Surrey. E.S. Marshall. Herb. Mus. Brit.—5S. peregrinum, Selkirk, 
1910. Herb. G. C. Druce. 
x №. LILACINUM, Bucknall. (S. officinale а. ochroleucum x В. purpureum x 
< S. peregrinum.)—A S. discolore differt: foliis inferioribus elliptico-lanceo- 
latis, in petiolum attenuatis, superioribus a basi latiori decurrentibus ; coroll 
gemmis purpureis, apice viridibus dein corolla tota dilute purpurea vel apice 
loborum flavidà, siccà purpureo-ceesia. 
x S. lilacinum, Bucknall, l. е. pp. 334 & 337. 
Has. With the parents, on the banks of the Land Yeo, near Bristol, 
Somerset. 
SPECIMENS EXAMINED: In Herb. Kew., Mus. Brit, Univ. Cantab., and 
Fielding. 
S. DENSIFLORUM, Bucknall. (S. officinale B. purpureum x > peregrinum.]—A. 
x S. discolori differt: habitus S. officinalis sed caule spe elatiore ; foliis in- 
ferioribus anguste oblongo-lanceolatis, basi breviter in petiolum attenuatis ; 
floribus majoribus, confertioribus ; corollæ rufo-violaces limbo latiore, 
eorollá siccà purpurascente, nuculis sepe olivaceo-nigris. 
x S. densiflorum, Bucknall, l. c. pp. 334 & 337. 
Has. With the parents on the banks of the Land Yeo, near Bristol, 
Somerset. 
SPECIMENS EXAMINED: In Herb. Kew., Mus. Brit., Univ. Cantab., and 
Fielding. 
x Ө. FERRARIENSE, Massalongo. See addendum, p. 556. 
