1923] SCHNEIDER, NOTES ON HYBRID BERBERIS 213 



are distinctly pruinose beneath. The spines are rather stout. The dull 

 brown twigs with minute lenticelles, the short bracts and other features 

 of the flowers strongly point to B. canadensis, the other parent being 

 either B. vulgaris (or possibly B. amurensis var. japonica Rehd.). The 

 undulate margins of the cells of the upper epidermis of the leaves are 

 present in both species. 



In the Gray Herbarium I have seen a specimen marked apparently by 

 Spach " B. aetnensis Rafin." from the Botanic Garden at Paris of which 

 the flowering branch easily might be taken for B. declinata oxyphylla. 

 Of the two other sterile branches the narrow obovate leaves show the same 

 fine, almost aristate serration and measure 2 : 1 up to 4 : 2.8 cm. without 

 the petiole which is 5-10 mm. long. The 2-3-year-old branches are 

 dirty grayish-brown, minutely punctate, the spines brownish and up to 

 12 mm. long. Probably the cross B. 



canadensis with 



canadensis 



time. 



The following hybrid forms are often met with in gardens under the 

 name of B. canadensis but, in my opinion, have nothing in common with 

 that species. 



laxiflora 



■Schneider in 



Mitt. Deutsch. Dendr. Ges. vm. 177 (1907). 



Frutex ad ultra 2 m. altus, ramis virgatis subdeflexis, ramulis declinatis; 

 ramuli annotini griseo-brunnei (vel ex Schrader surculi pallide sanguinei), 

 valde angulato-sulcati, biennes cinerascentes; internodia 1-2.5 cm. longa; 

 spinae simplices vel 3-fidae, brunnescentes vel cinerascentes, subtus 

 sulcatae, mediae 0.7-1.5 cm. longae, lateralibus longiores. Folia ad 8- 

 fasciculata, valde inaequalia, papyracea, ramulorum fertilium obovato- 

 oblonga, apice acutiuscula, mucronulata, basim versus subsensim in 

 petiolum 7-10 mm. longum attenuata, minute vel parce vel subdistincte 

 serrata vel subintegra, minimis exceptis 2 : 0.9-4, 5 : 2, rarius ad 6.5 : 

 3.2 cm. magna, superne saturate viridia, subtus cinereo-viridia utrinque 

 laxe sed distincte elevato-reticulata, ramulos juveniles fulcescentia majora, 

 cuneiformi-obovata, in petiolum longiorem desinentia, grossius serrata, 

 ad 4 : 1.7-7 : 3.5 cm. magna petiolo ad 18 mm. longo excluso, surculorum 

 late ovata vel ovato-elliptica, apice rotundata, basi subito in petiolum 

 circiter 5 mm. longum contracta, grossius distantius saepe subsinuato- 

 serrata, serraturis 0.5-1.5 mm. longis, circiter 3.5-4.5 longa et 2.5-3 

 cm. lata, subtus distinctius glaucescentia (pruinosa). Inflorescentiae 

 elongato-racemosae, pendentes, 3.5-9 cm. longae, basi vel vix nudae; 

 pedicelli fructiferi infimi ad fere 2 cm., superiores 6-10 mm. longi; 

 bracteae lanceolatae, acuminatae, 1.5 ad fere 3 mm. longae; flores 

 (colore B. vulgaris?) circiter 7 mm. diam.; sepala (externa minima 

 prophylliformia et cito caduca?) media late ovata internis late ovato- 

 ellipticis vel obovatis circiter 5 mm. longis duplo minora; petala circiter 



