ERICACEAE. — RHODODENDRON 523 



Western Szech'uan: Wa-shan, thickets, alt. 2300-2800 m., June 

 and November 1908 (No. 1343, type); same locality, alt. 2G00-3000 

 m., June 1908 (No. 3449)- 



This species is most closely related to R. polylepis Franchet which has leaves 

 fulvous-brown below, a different calyx, anthers shortly exserted and smaller fruit. 

 It is also closely related to R. concinnum Hemsley which has shorter, oblong-oval 

 leaves, the corolla lepidote on the outer surface and pubescent within and slenderer 

 capsules. 



To Sarah Choate Sears, artist, lover and successful cultivator of flowers, this 

 species is dedicated. 



Group c. 



Leaves hairy or glabrous with the petioles setose. 



Rhododendron Amesiae Rehder & Wilson, n. sp. 



Frutex 2-4-metralis, ramosus; ramuli hornotini et annotini dense v. 

 interdum sparse verruculosi, annotini plerumque flavido-brunnei, vetus- 

 tiores flavido-cinerei ; gemmae oblongo-ovoideae, acutiusculae, perulis 

 paucis ovatis obtusis mucronatis ciliolatis. Folia coriacea, elliptica v. 

 elliptico-oblonga, acuta, calloso-mucronata, basi rotundata, 4-8 cm. 

 longa et 2-3.5 cm. lata, supra obscure viridia, lepidota et ad costam 

 mediam leviter elevatam v. vix impressam breviter villosa, subtus 

 pallidiora dense v. densissime lepidota et ferruginea, nervis utrinsecus 

 6-8 supra leviter elevatis interdum sparse villosulis subtus obsoletis; 

 petioli, 5-7 mm. longi, canaliculati, lepidoti, supra setoso-pilosi. 

 Flores terminales, 2-3, subumbellati; pedicelli lepidoti, 1-1.5 cm. longi; 

 calyx cupularis, lepidotus, interdum sparsi villosulus, dentibus trian- 

 gularibus v. rotundatis circiter 1 mm. longis longe ciliatis; corolla 

 infundibuliformis, 3.5-4 cm. longa et 4.5-5 cm, diam., atropupurea, 

 extus sparse lepidota, tubo basi fere cylindrico intus circa medium 

 villosulo, lobis 5 ovatis obtusis 1.5-2.5 cm. longis; stamina 10, inaequa- 

 lia, longiora corollam fere aequantia, filamentis compressis infra 

 medium villosis basis excepta, antheris ochraceis ovoideis; ovarium 

 conicum, 4-5 mm. longum, dense lepidotum, basi et apice albido- 

 pilosum; stylus gracilis, curvatus, 3.5 cm. longus, apicem versus sensim 

 incrassatus, stigmate vix capitato leviter lobato. Capsula conica, 

 1.5-1.8 cm. longa et 6 mm. diam., sulcata, dense lepidota; semina 

 ellipsoidea, utrinque acuta, circiter 2 mm. longa, exalata. 



Western Szech'uan: Mupin, woods, alt. 2300-3000 m., June 

 1908 and October 1910 (Nos. 3444, type, 4233). 



The setose petioles and the corolla glabrous on the outer surface suflSce to 

 distinguish this new species from its near aUies R. Searsiae Rehder &. Wilson and 



