1920] REHDER, NEW SPECIES, VARIETIES AND COMBINATIONS 201 



larger leaves and with the style as long as the stamens is cultivated in the 

 Harvard Botanic Garden. 



Philadelphus coronarius f. deutziaeflorus, nom. emend. — P. coronarius 

 var. deutziaeflorus plenm Hartwig, 111. Geholzb. 258 (1892). 



A form with double flowers in 3-5-flowered racemes; petals elliptic- 

 oblong to narrow-oblong, mostly acutish; pedicels glabrous: leaves villous 

 along the veins near the base, otherwise glabrous. From the other double- 

 flowered forms of P. coronarius this dififers in its narrow mostly acutish 



petals. 



X Philadelphus Zeyheri Schrad. var. Kochianus, comb. nov. — P. 

 Kochianus Koehne, Dendr 183 (1893). 



This variety differs from the type chiefly in the longer style which ex- 

 ceeds the stamens. The pure white cup-shaped flowers are very handsome. 



X Philadelphus Zeyheri var. umbellatus, comb. nov. — P. umhellatus 



Koehne, Dendr. 181 (1893). 



This form differs from P. Zeyheri chiefly in the flowers being borne in 

 7-15-flowered cymes; the style is about as long or sometimes longer than 

 the stamens: leaves glabrous beneath or villous only along the midrib. 

 The cymose inflorescence is apparently derived from P. grandijlorus or 

 P. inodorus which show the cymose character of their inflorescence by the 



i)ediccls 



Philadelph 



ifl 



(1903). 

 Upright shrub; bark of the previous year's branches chestnut-brown, 



tardily exfoliating; young branchlets sparingly pubescent; leaves ovate, 

 acuminate, rounded at base, 2-4, on shoots to 5 cm. long, remotely denticu- 

 late or entire, glabrous above, rather densely strigose-pubescent beneath, 

 3-nerved at the base; petiole^ about 5 mm. long, pubescent: flowers 3.5- 



,lyx-lobes ovate, acuminate; petals 



lyx 



than the stamens, divided only at apex, with rather small connivent 



stigmas, 



(Le 



Lcmoine 



Ion blanc" sent out by Lemoine in 1896 or before, which differs chiefly in 



its smaller leaves and in the flowers being borne in 5-7-flowered racemes ; 



the slender pedicels are 0.5-1 cm. long, with two bracts about the middle, 



I have not used Schelle's varietal name for the binomial to avoid any con- 



i floras plenus 



nanus. 



X Philadelphus cymosus, nom. nov. (? P. grandiflorus vel spec, af- 



£nis 



brown 



exfoliating; young branchlets glabrous: leaves elliptic-oblong to elliptic- 



