1920] REHDER, NEW SPECIES, VARIETIES AND COMBINATIONS 105 



Moore 

 Moore 



C. Standishii Tli. 



fl 



referred to C patens on account of the large flowers, the plumose style and 

 the always ternate leaves. 



rubro 



C. ruhro- 



marginata Jouin in Mitt. Deutsch. Dendr. Ges. xvi. 236 (1907). — C 

 Flammula var. ruhro-magrinata Cripps ex Jouin, 1. c, pro synon. 



This garden form Is apparently of the same origin as C violacea DC. 

 which is considered a hybrid between C flammula and C. Viticella; it 

 differs in the whitish sepals bordered with reddish violet. 



Clematis glauca Willd. var. akebioides f. phaeantha, f. nov. 



A typo varietatis recedit floribus extus violaceis. 



Cultivated in Highland Park, Rochester, X.Y. (type specimen coll. by 



W 



aiLca 



all particulars except in the color of the flowers which is dull violet outside. 

 The leaflets are oblong to oblong-lanceolate sparingly dentate or incised- 

 dentate or occasionally entire; the sepals measure about 2 cm. in length and 

 6-7 mm, in width. Of the origin of this form nothing is known to me. 



Clematis paniculata Thunberg var. dioscoreifolia, comb. nov. — C. 



ijoli 



pe 



lets usually rounded and mucronate at the apex, those of the floral region 

 often cmarginate, and in their firmer somewhat fleshy texture, and in the 

 broader, obovate-olilong or oblong sepals. The plant was first collected 

 in 1908 by Taquet in hedges near Hongno on the island of Quelpaert, Korea, 

 and descril^ed the following year as a new si)ecies by Leveille & Vaniot 

 who compared it only with G. reda L. and overlooked its much closer 

 relationehip with C. paniculata. It was introduced into cultivation in 1911 

 by M. L, de Vihnorin who also sent seeds to the Arnold Arboretum where 

 it has proved an attractive climber, similar to C. paniculata, but apparently 

 not c^uite as hardy, though with handsomer foliage of firmer texture. 



SAXIFRAGACEAE 



Philadelphus L. 



Philadelphus rhombifolius, spec. nov. 



Frutex; ramuli hornotini sparse pilosi, pallide brunnei, annotini cortice 

 cinereo-brunneo vel cinereo sparse horizontaliter fisso persistente obtecti. 

 Folia rhombico-ovata vel rhombico-elliptica acuta vel acutiuscula, basi 

 late cvmeata, 5-7 cm. longa, minute et sparse denticulate vel Integra, supra 

 glabra, intense vhidia, subtus pallidiora, dense villosa, basi plerumque 

 paribus nervorum duobus satis distantibus instructa; petioli 4-7 mm, 

 longi, pubescentes. Racemi 5-9-flori, rhachi sparse hirsutula; par in- 

 ferior florum in axlllls foHoriun et 1.2-2 cm. a superiorc distans; pedicelli 



