ERICACEAE. — RHODODENDRON 515 
November 1908 (No. 1329); Shih-ch’uan Hsien, on cliffs in full sun, 
alt. 1000-1300 m., August 1910 (No. 4726). 
A pretty species allied to R. micranthum Turczaninow, which has rather different, 
much more lepidote foliage, smaller, differently shaped flowers, a very small calyx, 
a pistil not exceeding the stamens in length and slender, elongate capsules. 
Our material is in ripe fruit with a few old flowers. The great length of the pistil 
is most remarkable. This new species occurs on scrub-clad rocky slopes where it 
is fully exposed to the sun. 
Sect. 3. RHODORASTRUM Maxim. 
Flowers from terminal and axillary buds usually crowded at the end of the 
branches; corolla mostly funnelform, pink or yellow; style and stamens exserted. 
Leaves sparingly lepidote, or glabrous above, 2-8 cm. long. 
Rhododendron Davidsonianum Rehder & Wilson, n. sp." 
Frutex 1-3-metralis; ramuli sparse lepidoti, saepe initio glauces- 
centes; gemmae ovoideae, acutiusculae, perulis ovatis obtusis v. 
apieulatis ciliatis dorso lepidotis. Folia chartacea v. tenuiter coriacea, 
elliptica v. oblonga, rarius lanceolata, acuta, rarius breviter acumi- 
nata, apiculata, basi cuneata, 2.5-6 cm. longa et 1-2 em. lata, margine 
leviter recurvata, supra laete viridia, nitentia, sparsissime lepidota, 
subtus glaucescentia squamulis fulvescentibus nitidulis non contiguis 
dense conspersa, nervis indistinctis, costa media supra leviter im- 
pressa interdum puberula subtus elevata; petioli glabri, circiter 
5 mm. longi. Flores in umbellis 1-3 terminalibus et axillaribus in 
apice ramulorum congestis plurifloris, bracteis caducis; pedicelli 
Sparse v. sparsissime lepidoti, 1-1.5 em. longi; calyx minutus, lobis 
rotundatis lepidotis saepe sparse ciliatis; corolla campanulato-in- 
fundibuliformis, 2.5-3 em. longa ac lata, rosea, glabra, ad medium 
5-loba, tubo circiter 1.5 longo e basi sensim ampliato intus glabro, 
lobis ovato-ellipticis circiter 1.5 longis et 8-10 mm. latis rotundatis; 
Stamina paullo exserta, filamentis filiformibus ad basim villosis et 
complanatis, antheris oblongis circiter 2.5 mm. longis ochraceis; stylus 
Stamina superans, 2.8-3.5 cm. longus, glaber, stigmate applanato 
Purpureo; ovarium 4-5 mm. longum, dense lepidotum, basi et apice 
pilosum. .Capsula cylindrica, 10-12 mm. longa, 3-4 mm. lata, sul- 
cata, sparse lepidota; semina flavo-brunnea, ovoidea, acuta, circiter 
l em. longa. 
1 Named for Dr. W. Henry Davidson, of the Friends Foreign Mission, at 
Chengtu Fu, western Szech'uan, in grateful recognition of the important services 
Which he rendered to me after my serious accident in the early — eg hep 
