534 WILSON EXPEDITION TO CHINA 
This species is closely related to R. Przewalskii Maximowicz, but may be dis- 
tinguished from that species by its longer and narrower fruit, larger seeds and 
the gray tomentum of the young branches; the petioles, pedicels and calyx 
also are sparsely hairy. Both species are alpine and are found growing together 
in the neighborhood of Tachien-lu. 
Rhododendron Przewalskii Maximowicz in Bull. Acad. Sci. St. 
Pétersbourg, XXIII. 350 (1877); in Mél. Biol. IX. 771 (1877).— 
Hemsley in Jour. Linn. Soc. XXVI. 29 (1889). — Bean in Flora & 
Sylva, III. 164 (1905). — Schneider, IU. Handb. Laubholzk. II. 485, 
fig. 321 d (1909). — Hemsley & Wilson in Kew Bull. Misc. Inform. 
1910, 108. 
Rhododendron kialense Franchet in Jour. de Bot. IX. 392 (1895). 
Western Szech'uan: west and near Wén-ch'uan Hsien, uplands, 
alt. 3000-3600 m., July 1908 (No. 3433; bush 1.5-3 m. tall, flowers 
white, spotted); Tachien-lu, Ta-p'ao-shan, moorlands, alt. 4300- 
5000 m., July 7, 1908 (No. 3434; bush 1-2 m. tall, flowers white); 
Tachien-lu, uplands, alt. 4300-4600 m., June 1908 (No. 3435; bush, 
1-3 m. tall, flowers white); same locality, alt. 3600-4500 m., October 
1910 (Nos. 4231, 4243; bushes 65 cm.-3 m. tall); same locality, alt. 
3600-4600 m., June and October 1904 (Veitch Exped. Nos. 3968, 
3957). 
This is the most alpine of the broad-leaved species found in western Sah 
where it is extremely abundant above the timber-line. The flowers vary in n 
from white to rose-pink and are commonly spotted. Maximowiez describes t 
stamens as villose and Franchet in his R. kialense as glabrous. Both nc 
represented in the specimens before us and gradually merge into one anotar 
The flowers and leaves are identical although the leaves vary considerably in e 
and shape. No. 3957 has broadly ovate leaves, floccosely tomentose below, 
rosy-pink corolla and stout fruit covered with purple bloom. 
Rhododendron ochraceum Rehder & Wilson, n. sp. i 
Frutex 3-metralis; ramuli hornotini dense pubescentes, pilis glan- 
duliferis interspersis, annotini glabrescentes; gemmae perulis ve 
tomentosis longe acuminatis exterioribus in appendicem elongatum 
linearem elongatis (semper ?). Folia tenuiter coriacea, oblanceolat&; 
subito breviter acuminata, basi late cuneata v. rotundata, margine 
leviter revoluta, 6-9 cm. longa et 1.5-2.5 lata, supra initio pilis fas- 
ciculatis caducis conspersa, mox glabra, laete viridia, opaca, minute 
elevato-reticulata, subtus dense tomento ochraceo floccoso 
costa media supra impressa subtus elevata, nervis lateralibus obeo- 
letis; petioli graciles, 1-2 cm. longi, sparse pubescentes et glanduloso- 
