ERICACEAE. — RHODODENDRON 535 



pilosi. Flores 8-12, racemoso-umbellati; pedicelli glanduloso-pilosi, 

 6-12 mm. longi; bracteae oblongae, 1-1.5 cm. longae, cito caducae, 

 extus sericeae; calyx cupuliformis, rubescens, lobis 5 inaequalibus 

 late triangularibus acutis 2-5 mm. longis pilosis; corolla late cam- 

 panulata, kermesina, immaculata, 5-loba, circiter 3 cm. longa et lata, 

 tubo e basi lata sensim ampliato, 18-20 mm. longo, lobis subrotundatis 

 plerumque emarginatis, circiter 1 cm. longis et pauUo latioribus; 

 stamina plerumque 12, inclusa, 1.6-2.2 cm. longa, filamentis glabris 

 compressis, antheris atropurpureis; ovarium conicum, dense pilis 

 strigosis plerumque glanduliferis obtectis, stylo glabro 2 cm. longo, 

 stigmate parvo simplici. Capsula cylindrica, 2-2.5 cm. longa et 5- 

 6 mm. diam., vetulosa et sparse glandulosa, valvis plerumque 6; 

 semina fusiformia, compressa, 2.5-3 mm. longa, flavido-brunnea. 



Western Szech'uan: Wa-shan, thickets, alt. 2600-3000 m., June 

 1908 (No. 3425). 



This is a rare and very distinct species perhaps most closely related to R. strigil- 

 losum Franchet, which has strigose hairs covering the branches, petioles and fruit, 

 very different tomentum, mainly confined to the center of the lower surface of the 

 leaves, larger flowers and very differently shaped fruit. Our plant may also be 

 compared with R. pachytrichum Franchet which is easily distinguished by the 

 leaves being glabrous on the under surface, with the exception of the midrib, by 

 larger flowers, villose stamens and by the larger, stouter and glabrescent fruit. 



Group d. 

 Leaves with a white or whitish often very close tomentum beneath. 



Rhododendron floribundum Franchet in Bull. Soc. Bot. France, 

 XXXIII. 232 (1886); in Nouv. Arch. Mus. Pans, ser. 2, X. 45 (PL 

 David. II. 88) (1888). — Hemsley & Wilson in Kew Bull. Misc. 

 Inform. 1910, 106. 



Western Szech'uan: Mupin, woodlands, alt. 2600 m., October 

 1910 (No. 4266; bush 3-5 m. tall); without precise locality, alt. 1300 

 m., July 1903 (Veitch Exped. No. 3967). 



The undescribed fruit of this species is stout, cylindric, straight or curved up- 

 wards, 2-3 cm. long, about 1 cm. wide, 8-10-celled and sparsely clothed with 

 short, yellowish-gray pubescence; seeds fusiform, 3-4 mm. long, chestnut-brown 

 in color. 



Rhododendron Hunnewellianum Rehder & Wilson, n. sp. 



Frutex 2-5-metralis; ramuli crassiusculi, initio tomento floccoso 

 cinereo vestiti, demum glabrescentes; gemmae subglobosae, perulis 

 paucis suborbicularibus extus fusco- v. fusco-cinereo-tomcntosulis intus 

 glabris. Folia coriacea, oblanceolata, rarius anguste oblongo-lanceo- 



