1925] 



AND COMBINATIONS 201 



narrow-cylindric, 0.8-1 cm. long, 5-lobed, lobes spreading, spathulate, 

 obtuse; stamens 5, long exserted, about twice the length of corolla, fila- 

 ments slender, puberulous, anthers oblong, 2.5 mm. long; pistil over-top- 

 ping stamens, ovary ovoid, densely strigose, style filiform, glabrous, 

 stigma capitate. Fruit oblong-ovoid, 0.8-1 cm. long, densely clothed with 

 pilose red-brown hairs passing to gray; seeds dark brown, minute, ovoid, 



wingless. 



China: province of Kweichou, J. Cavalerie, April and June, 1904 (nos. 



1796, 2059 in Herb. Edinburgh). 



Among some Rhododendron material courteously loaned by the Royal 

 Botanical Gardens, Edinburgh, are the type specimens of Leveille & 

 Vaniot's R. chrysocalyx. This species is not recorded in Wilson & 

 Rehder's Monograph and since the original description is brief it has been 

 thought worth while to give an account of it here. The species is very 

 distinct and is characterized by the shining yellow to red-brown strigose 

 hairs which clothe the shoots, petioles, pedicels and ovary, by its narrow 

 lanceolate to oblanceolate crenate-serrate leaves polished dark green on 

 the upper surface and pallid on the lower, by its long exserted stamens and 

 style. The corolla would appear to be white or pale pink. It is most 



Mariae 



same 



but the leaves of Hance's species are very different, being entire, more 

 coriaceous and less lustrous, elliptic or elliptic-lanceolate to obovate, from 

 3 to 9 cm. long and from 1 to 3 cm. wide. This marked difference in foliage 

 gives the plant a very different appearance. Both belong to the section 



Tsutsutsi G. Don. 



The two type specimens bear the name "72. Mariesii" in the handwriting 

 *t the late Professor I. B. Balfour and are said to have been determined as 

 such by E. H. Wilson. When on a visit to Edinburgh in the summer of 

 1920 I was shown these specimens among many others and apparently got 

 the names confused. R. chrysocalyx L6v. & Vaniot does not even belong 

 to the same section as R. Mariesii Hemsl. & Wils. 



NEW SPECIES, VARIETIES AND COMBINATIONS FROM 



HERBARIUM 



ARBORETUM 1 



Alfred Rehder. 



X Taxus Hunnewelliana (T. canadensis X cuspidata), hybr. nov. 



Intermediate between the parents: from T. canadensis Marsh, it differs 

 in its more vigorous and upright habit, the stouter branchlets with the 

 leaf-bases more swollen and usually more or less brownish the second 

 year, even on weaker branchlets, and darker brown on stouter branchlets, 



1 Continued from vol. V. 242. 



