KEY TO THE SPECIES OF MOCK ORANGES 



190 



A. Flowers as in the last but a little smaller, scentless ; calyx lobes 



only as long as tube. A vigorous shrub of drooping habit. 



Odorless Syringa — Philadelphus inodorus. 

 A. Flowers on short branchlets with 1-3 creamy-white flowers ; 



leaves hairy beneath, l-2i inches long. Hairv Syringa (309) — 



Philadelphus hirsutus. 



A. Flowers nearly solitary, 1 inch broad, very fragrant ; leaves entire 

 (|-1 inch long). Small-leaved Syringa — Philadelphus mi- 

 crophyllus. 



* Bark of old branches not peeling off ; flowers in simple racemes. (B.) 



B. Calyx hairy outside ; bark gray ; tall, to 20 feet ; racemes 5-11- 

 flowered, flowers 1^-2 inches broad, creamy-white, about scent- 

 less. Broad-leaved Sy'ringa (310) — Philadelphus pubescens. 



B. Calyx smooth outside ; bark brown or grayish brown ; flowers 

 5-t) in clusters. (C.) 

 C. Flowers pure white, scentless (l^- If inches broad) . Gordon's 



Syringa (311) — Philadelphus Gordonianus. 

 C. Flowers smaller, about 1 inch, scentless ; bark with numerous 



horizontal cracks. Lewis' Syringa — Philadelphus Lewisi. 

 C. Flowers 1 inch, slightly fragrant ; bark with whitish longitudhial 

 cracks. Satsuma Syringa — Philadelphus satsunii. 



Fig. 312. — Itea. 



Fig. 313. — Golden Currant. 



