1920] REHDER, NEW SPECIES, VARIETIES AND COMBINATIONS 203 



[1910]. —Fig. in Lemoine, Cat. No, 176, p. 26, t. [1910]; No, 179, pi. [1911]. 

 Gard. Chron. ser. 3, lxiv. 3, fig. [1918]. — Gard. lxxxii. 267 [1918].— Rev. 

 Hort. 1910, 408, 409). — Here belong alsq the following hybrids: *' Argen- 

 tine '* (Lemoine, Cat. No. 190, 20 [1916], or before?) with scarcely exfoliating 

 bark, smaller leaves rounded at the base and very double flowers usually in 

 three^s. — "Glacier " (Lemoine, Cat. No. 190, 21 [1916], or before) with still 

 smaller leaves and smaller double flowers in very dense 5-7-flow^ered racemes 

 and with the calyx only thinly pubescent. — *' Bouquet blanc" (Lemoine, 

 Cat. 155, VII. [1903]. — Fig. in Jour. Hort. Soc. xxxviii. cxlv. fig. 116 [1912]. 



Gartenwelt, xvii. 101 [1913]). This is similar to the last named, but as 

 the calyx is quite glabrous it may possibly bfe an oflFspring of P. polyanthus. 



X Philadelphus purpureo-maculatus Lemoine, Cat. No. 152, viii. 



(1902). — Bean in Bot. Mag. cxxxiv. t. 8193 (1908). — (P. Lemoinei 



X P. Coulteri). — P. Lemoinei var. maculatus Gard. Chron. ser 3. xxxvi. 

 14 (1904). 



Raised by Lemoine from seed of P. Lemoinei "Fantaisie" (Lemoine, Cat, 

 No. 146, x [1900]), which is according to Lemoine a hybrid of P. Goul- 

 teri and P. Lemoinei. To this group of hybrids of which P. purpureo- 

 maculatus is the oldest binominal belong the following forms: fitoile rose, 



Fantaisie (P. phantasia A. H, Moore), Nuage rose, Oeil de pourpre, Romeo, 

 Sirene, Surprise and Sybille. 



Fendlera Engelm. & Gray 



The species of this interesting little genus characteristic of the upper 

 Sonoran zone show great uniformity in their floral characters, but may be 

 easily distinguished by their leaves. 

 Leaves ovate-oblong to narrow-lanceolate. 



Leaves beneath sparingly strigose or nearly glabrous, rarely with scat- 

 tered minute branched hairs, not revolute. 



X 



Leaves glabrous and smooth above, ovate-oblong to oblong-lanceolate, 



obscurely 3-nerved . . • !• P. rupicola. 



Leaves more or less scabrid above, oblong-ovate to linear-lanceolate, 



mostly falcate, 1.5—4 cm. long, often strongly 3-nerved 



2. F. Tupicola yax.falcata. 



Leaves beneath densely covered with a tomentum of branched hairs and 



with strigose hairs, scabrid above, usually narrow-oblong, 1-2 cm. 



long, revolute 2. P. Wrightii, 



Leaves linear, 1.5-2.5 cm. long and 1-1.5 mm. wide, coriaceous, strongly 



revolute, smooth or nearly smooth above 3. P. linearis. 



ru 



6, 7) (1852).^ — F/rupicola var. a Lindheimeri A. Gray, 1. c. 



perpend 



above 



1850, P. Lindheimer (No. 257, old fruit); Comanche Springs, New Braun- 



