ENUMERATION OF THE SPECIES 51 



size of the calyx-lobes and of the leaves. I have seen the type specimens in Tokyo 

 but the material is so poor that I could arrive at no definite conclusion in the 

 absence of my own material for comparison. 



Rhododendron subsessile Rendle in Jour. Bot. XXXIV. 357 (1896). 

 Merrill in Govt. Lab. Publ. (Philipp.) XXIX. 40 (1905). Millais 

 Rhodod. 249 (1917). 



Philippine Islands: Luzon, Prov. Benquet, Baguio, March 



1907, 1913, A. D. E. Elmer (Nos. 8595, 14,298); same locality, May- 

 June, 1916, J. K. Santos (No. 38); same province, Mt. St. Tomas, 

 February 18, 1916, E. C. Leano (Forestry Bureau No. 25,125); same 

 locality, March, 1904, A. D. E. Elmer (No. 5799); same locality, 

 July 1, November 29, 1904 R. S. Williams (Nos. 1223, 2001); same 

 locality, May 10, 1904, P. T. Barnes (No. 922); same locality, April, 



1908, H. N. Whitford (Forestry Bureau No. 11,090); Mt. Tonglon 

 alt. 2200 m., November 12, 1905, May, 1911, E. D. Merrill (Nos. 

 4815, 736); same place, August, 1906, H. M. Curran (No. 5032); 

 same place, December, 1906, E. A. Mearns; same place, December, 



1908, M. L. Merritt (No. 14,148); Bucao, alt. 2300 m. January 4, 



1909, R. J. Alvarez (No. 18,362); Mt. Pulog, January 3 & 8, 1909, 

 T. C. Zschokke and M. L. Merritt (Nos. 18,035, 18,172); Pauai, July, 

 1907, E. A. Mearns (No. 4275); same place, alt. 2100 m., June, 1909, 

 R. C. McGregor (No. 8420); same place, April 17, 1918, J. K. Santos 

 (No. 31,994); District of Lepanto, January 26, 1909, F. W. Darling 

 (No. 16,573); same district, Mt. Data, November 4, 1905, E. D. 

 Merrill (No. 4606); prov. Abra, February 8, 1909, M. -Ramos (Nos. 

 7249, 7105); subprov. Bontoc, alt. 1350 m. April 7, 1910, Pere M. 

 Vanoverber (Nos. 351, 364) all these numbers in Herb. Bureau 

 Science Manila. 



This Philippine species in its pubescence and foliage somewhat resembles, as 

 Dr. Rendle points out, the Japanese R. mucronatum G. Don, but it is non-glan- 

 dular, the flowers are not more than one-third the si v ze and have a minute calyx 

 and a more tubular corolla. Its nearest relative is probably the Formosan R. ru- 

 bropilosum Hayata. It is evidently a twiggy plant and the young branches are 

 clothed with the usual flattened, appressed bristles. The oval to lanceolate per- 

 sistent leaves are from 1.5 to 3.5 cm. long and from 0.7 to 1.2 cm. wide, acute 

 and mucronate, with slightly recurved margins, the midrib impressed above, promi- 

 nent below. On adult leaves the upper surface is clothed with appressed white 

 hairs but when young both surfaces are densely covered with rufous-gray, silky 

 hairs. The flowers are in terminal two to several flowered clusters. The 

 corolla is campanulate-funnel-form, with the tube less than 1 cm. long and short 

 spreading lobes, and is said to be from lilac to violet-purple in color; the stamens 

 vary from 6 to 10, are slightly exserted and are overtopped by the graceful, 

 curved style which is villose at the base. The pedicels, calyx and ovary are densely 

 clad with ferrugineous villose and more or less flattened, straight hairs. The 



