Pitn,s\ LXIY. ERICACEAE 409 



6. PIERIS, D. Don ; El. Brit. Incl. iii. 460. 

 (included under Li/oaia, ISTutt. by Drude in Eatijler u. Prantl iv. 1. 44.) 



Trees or shrubs. El. pentamerous, in bracteate racemeSj pedicels bracteolate. 

 Ovary 5-celled, capsule loculicidally 5-valved, seeds x linear-oblong, not 

 winged or fringed, testa loose. Species 12, from the Himalaya to Japan. 

 Mexico and N.-E. America. 



1. P. ovalifolia, D, Don ; Collett SimlaEl.,293, Eii^. 89,— Syn. J[?KZfow€'<:Za 

 ovalifolla^ Wall. ; Wight Ic. t. 1199 ; Brandis E. El. 2S0. Vern. Ailan^ Pb. ; 

 Jircntj Yert a J Ladrang J Bash., A y ar ^ An i/ar ^Hmd. 



A small deciduous tree, 1. ovate- or elliptic-oblong, entire, acute or shortly 

 acuminate, often pubescent when young, base rounded, blade 3-8, pet. |~J in. 

 long. Eacemes axillary more or less pubescent, 4-10 in. long, fl. white, some- 

 times pink or blueish, calyx- teeth triangular, corolla l~\ in. long, filaments 

 hairy, with 2 horns near the apex. 



Outer Himalaya, in the North West 4-8,000 ft. oftf^n asboeiated -with Qnenuh inccnm 

 and Bhodochndro)} arhoremn^ miSikkim associated ^\ it h Sal in the Tista valley at 2,000 

 and with the Ehododeiidrons of Tonglo at 10,000 ft. (Oamhle). Ivhasi hills. The 

 Sikkim and Khasi hills Sioecimens have a longer corolla. Burma ; Kachin hills, 

 Bernaid niyo and headwaters of Ynnzalm 5-7,000 It.— China, Ja])aii. Fl. Aiiril-Jnno. 

 2, P. villosa, Hook, f. Himalaya higher langes 10-13,000 ft. Garhwal to iSikkini 

 (prohably in Jannsar at 7,500 ft., Gamble Ind Timb. li. ed.431). A hniall tree, similar 

 to 1, but 1. smaller, villous beneath, calyx-tube linear-lanceolate, corolla bioadlj' cam- 

 paniilate, no horns at the top of filaments. 3. P. formosa, B. Don {Andromeda formo^a, 

 Wall. ; Wiglit Ic. 1. 1200). Himalaya 6-10,000 ft. irom Nepal eastwards. Khasi hills. 

 Manipur. A small, evergreen, glabrous tree, 1. coriaceous, lanceolate, serrate, blade 

 B-5, pet. \ in. Racemes in large terminal paniele^s, corolla white, filaments with 2 

 horns at the end. 



Lencotlioe Grifiathiana, Clarke. Bhutan, 6,800 ft. Branchlets fiexnose, 1. long acumi- 

 nate, entire or minutely serrulate upwards, blade 4-6, pet. \ in. long. Eacemes axillary, 

 3-5 in. long. Capsule depressed-globose J in. diam. Seeds flat nearly orbicular, edge 

 with a dense fringe of short blunt unicellular hairs. 



7. RHODODENDRON, Linn. ; M. Brit. Ind. iii. 462. 



Small trees or slirubH, often epiphytic (the species here clescxibed evergreen, 

 the deciduous species commonly known as Azalea). L. entire^ usually coria- 

 ceous and crowded at the ends of branches. .M. showy, as a rule large, mostly 

 in terminal clusters or umbelliform corymbs, bracts at the base of peduncle 

 numerous, large, coriaceous, deciduous, enclosing the buds. Calyx 5-lobed, 

 entire or obsolete. Corolla widely funnel-shaped, campannlate or cylindric, 

 lobes 5-10, anthers oblong, opening by terminal pores. Ovary 5-20-celled, 

 ovules 00. Capsule septicidally 6-20-valved from the apex, the valves breaking 

 away from the placentas. Seeds oo, testa often pi^odiiced at the ends, one end 

 frequently cilia te. Species 200, chiefly in Eastern Asia, a smaller number in 

 temperate North America, a few in Europe and Western Asia, 1 in tropical 

 Australia. 



I. Capsule cylindric, valves woody or coriaceous, the placentas remaining 

 attached to the central axis. 



A. Underside of 1. without glandular scales, calyx-lobes short or obsolete 

 not enlarged in fr. 



(a.) Corolla-lobes 5, stamens 10. 



n. Corolla pu.rple, rose or white, underside of 1. hairy. 



1. R. arboreum, Sm.; Wall PL As. Ear. t. 123 ; Wight 111, t. 140 and 

 Ic. t. 1201 ; Bedd. Fl. ^ylv. t. 228. Syn. R. nilagincum, Zenker ; R. Camjp- 



