228 JOURNAL OF THE ARNOLD ARBORETUM [vol. iv 



res cinerascentes; internodia 0.8 ad 1.5 cm. (vel surculorum ad 3.5) longa; 

 spinae etiam surculorum satis debiles, parte superiore ramulorum simplices, 

 parte inferiore pleraeque 3-fidae, flavo-brunneae vel flavescentes, mediae 

 3-8(-10), laterales vix ultra 5 mm. longae, subtus applanatae vel tenuiter 

 sulcatae. Folia 2-6-fasciculata, valde inaequalia, matura membranacea, 

 ramulorum fertilum oblanceolata, obovato-oblonga, subrhomboideo- 

 obovato-oblonga vel obovato-elliptica, apice subacuta, obtusa vel subro- 

 tundata, tenuissime mucronulata, basim versus satis subito in petiolum 

 1-6 mm. longum attenuata, margine integerrima vel dentibus minimis 

 paucis rarius pluribus vix ad 1 mm. longis instructa, angustiora petiolo 

 incluso 15 : 6 ad 35 : 15 mm., latiora 20 : 11 ad 30 : 15 mm. magna, 

 superne viridia, subtus pallidiora vel subpruinosa, satis laevia vel tenuiter 

 reticulata; folia ramulorum sterilium surculorumque majora, saepissime 

 latiora, ovato-, obovato- vel elliptico-oblonga, apice obtusa vel rotunda, basi 

 acuta et subito in petiolum 1-6 (-8) mm. longum contracta, margine satis 

 distanter vel pleraque densius graciliter serrata serraturis vix ad 1 mm. 

 longis, rarius subintegra. Inflorescentiae subumbellato-racemosae vel 

 racemosae, 3- ad 15-florae, rariter (saltern versus apicem ramulorum) ut 

 in B. Thunbergii uniflorae, pedicello nudo ad 2 cm. longo, excluso 1-3 

 cm. longae, patentes vel saepissime nutantes; pedicelli 4-6 mm. longi, 

 apice leviter incrassati, bracteis lanceolatis acuminatis 1.5 ad 2 mm. longis 

 suffulti; flores lutei (sepalis externis vel prophyllis saepe rubescentibus), 

 6-7 mm. diametientes, sepala externa vel prophylla bracteiformia, media 

 ovato- vel obovato-oblonga 3-4 mm. longa quam petala pallidiora; petala 

 ovato-elliptica vel obovato-oblonga, apice integra, 4-5 mm. longa, basi 

 glandulis satis aurantiacis distinctis praedita; stamina petalis }{ breviora, 

 apice truncata; ovaria elliptico-oblonga, ovulis 2 sessilibus. Fructus (no. 3 

 ex Ottawa) circiter 9 mm. longi et 5 mm. crassi, ellipsoidei, fere ut in 

 B. Thunbergii colorati, stigmate sessili coronati; semen plerumque 1, circiter 

 6 mm. longum, purpureo-brunneum, minutissime punctulatum. 



This hybrid has been observed in different gardens. It has been raised 

 artificially by Dr. Charles Saunders in the gardens of the Experimental 

 Station at Ottawa, Canada, from which Dr. Macoun sent me material of 

 different forms of this cross under numbers 1 to 11 in June, 1917. In this case 

 one of the parents has been B. vulgaris f . atropurpurea. The first mention of 

 a possible hybrid between B. Thunbergii and B. vulgaris I find in a note from 

 Professor Jack in Garden and Forest, n. 272 (1889). This note runs as 

 follows: "A curious and beautiful Barberry now in flower here is not 

 referable to any described species, while some of its characters suggest a 

 possible hybrid between B. vulgaris and B. Thunbergii. It has the bark 

 upon the branches of B. vulgaris, the simple, slender spines of B. Thun- 

 bergii, the tufted, entire obovate leaves of this last species. They are 

 considerably larger, however, paler green, more membranaceous, and borne 

 on long slender petioles. The flowers are produced in long-stalked (some- 

 times nearly an inch long), umbellate racemes, of eight or ten or sometimes 



