1923] SCHNEIDER. NOTES ON HYBRID BERBERIS 231 



This hybrid which is almost evergreen has proved much hardier than 

 B. Veitchii Schneider (B. acuminata Veitch, non Franchet), hardy only 

 in the warmer parts of the United States and Central Europe. B. 

 Vanfleetii deserves the attention of all gardeners. The leaves are in 

 part more like those of B. vulgaris than of B. Veitchii, and often show a 

 very fine serration. The plant needs further observation, and probably 

 some different forms may be raised from its seeds; I already have some 

 material of the second generation which comes much nearer to B. vulgaris. 



Very different looks another hybrid of B. Veitchii with B. Poiretii of 

 which I collected flow r ering specimens at Bell on April 26, 1919. It seems 

 to be a rather remarkable plant but I do not yet want to describe it, as 

 the material I have is too scanty. 



Dr. van Fleet made two other crosses of B. Veitchii: with B. verruculosa 

 Hemsl. & Wilson and with B. pruinosa Franch. Of both he had only small 

 plants when I was at Bell, but B. Veitchii X pruinosa had already flowered. 



B. pruinosa had also been crossed with B. Sargentii Schneid. 



I collected flowering specimens, too, from two hybrids of B. Thun- 

 bergii: one with B. Rehderiana Schneid. and a second one of which B. 

 Fendleri Gray is said to be the other parent. Both need further observa- 

 tions. 



The last hybrid I wish to deal with in my present note is a possible cross 

 between B. pruinosa and B. diaphana Maxim, for which I propose the 

 following name: 



X B. Vilmorinii, hybr. no v. 



Frutex satis crasse ramosus; ramuli annotini flavo-brunnei, sulcato- 

 angulati, glabri; biennes flavo-cinerei, vetustiores cinerascentes; internodia 

 1-2.5 cm. longa; spinae 3-fidae, flavo-brunneae, patentes, mediae 1-2 cm. 

 longae, subtus sulcatae, lateralibus paullo longior bus. Folia 3-5-fas- 

 ciculata, inaequalia, matura crasse chartacea vel subcoriacea, elliptica, 

 ovato-elliptica vel oblongo-elliptica, apice acuta spinulosa, basi in petiolum 

 subnullum contracta, margine argute spinoso-serrata serraturis utrinque 

 6-12 aristatis 1.5-2.5 mm. longis, 2-5 cm. longa, 0.8-2 cm. lata, superne 

 saturate viridia, subtus glauca vel albo-viridia, pruinosa, haud vel vix 

 papillosa. Inflorescentiae visae 1 -florae; pedicelli ad 2 cm. longi, rubescen- 

 tes; flores lutei?, circiter 9-10 mm. diametientes?, sepala externa vel pro- 

 phylla non visa, media late ovata, internis late obovato-ellipticis rotundatis 

 ad 8 mm. longis fere duplo minora; petala late obovata, ad 7 mm. longa, 

 emarginata, basi breviter unguiculata glandulis 2 ovoideis mediocribus 

 aurantiacis separatis praedita; stamina petalis fere duplo breviora, apice 

 distincte apiculata; ovarium ovato-ellipticum, stigmate satis Iato, ovulis 

 circiter (5-)7-8 sessilibus. Fructus nondum maturi elliptici, circiter 

 11:5 mm. magni, ut videtur atrocerasini; stigmate subsessili; semina 1-2, 

 nondum perfecte matura. 



