550 WILSON EXPEDITION TO CHINA 



the same species. Also the fact that in western China 5-merous species occur in 

 both genera, while they are unknown in other regions of their wide geographical 

 range, points toward a close connection of these two genera. Neither are there 

 strong anatomical characters to separate the two genera. The only difference Van 

 Tieghem points out is the presence of pitted tracheids in the vascular bundle of the 

 leaves in Wikstroemia^ wanting in Daphne, but as Van Tieghem has examined only 

 a limited number of species, it remains still to be proved if this character holds good 

 for all species. Considering, however, that I had to deal here only with a limited 

 number of species which do not represent all the sections and groups of the two 

 genera, I have hesitated to make any change and have maintained the two genera 

 in their usual limitation, leaving the question open for future investigation. 



Here may be added a note on a closely related genus not collected by Wilson. 



ERIOSOLENA Bl. 



Eriosolena involucrata Van Tieghem in Ann. Sci. Nat. s6r. 7, XVII. 196 

 (1893). 



Daphne involucrata Wallich in ^5. Research. Xlll. 383, t. 6 (1820). — Meisner 

 in Denkschr. Regensb. Boi. Ges. 111. 282 (1841). — Hooker f., Fl Bnt. Ind. 

 V. 193 (1886). 



Eriosolena Wallichii Meisner in PL Vase. Gen. II. 243 (1836-43). —Nitsche, 



Beitr. Gatt. Daphne, 9 (1907). 

 Scopolia involucrata C. A. Meyer in Bull Acad. Sci. St. Petershourg, s6r. 2, I. 



357 (1843); in Ann. Sd. Nat. ser. 2, XX. 49 (1843). 

 Daphne Wallichii Meisner in De CandoUe, Prodr. XIV. 540 (1857). 



Yunnan: Szemao, alt. 1500-1600 m., A. Henry (Nos. 11564, 11564^ 11564"). 



In considering Eriosolena a distinct genus I am followmg Van Tieghem ana 

 Nitsche. Van Tieghem (in Ann. Sci. Nat. sdr. 7, XVII. 194, 225 [1893])_ points 

 out important anatomical differences between Daphne and Eriosolena which are 

 confirmed by Nitsche. Eriosolena is also well distinguished morphologically by 

 the axillary peduncled heads of flowers enclosed by an involucre. It is perhaps 

 more closely related to Edgeworthia which also has a lateral peduncled capitate 

 inflorescence and hke it has calcium oxalate in the stem and in the leaves, ^*\^^ 

 is absent from Daphne. Eriosolena involucrata has apparently not been recordea 

 before as a Chinese plant. 



EDGEWORTHIA Meisn. 



Edgeworthia chrysantha Lindley in Jour. HorL Soc, Lond. 1. H^ 

 (June 1846); in BoL Reg. XXXIII. 7, 48 (1848). — Pritzel in Bol 

 Jahrb. XXIX. 480 (1900). — Meisner in De Candolle, Prodr. XIV. 

 543 (1857). — Hemsley in Jour. Linn. Soc. XXVI. 401 (1894). — Pa^- 

 panini in Nuov. Giorn. Ital. Bot. n. ser. XVII. 675 (1910). 



Magnolia tomentosa Thunberg in Trans. Linn. Soc. II. 336 (179-l;» s • 

 *' Kobus ^' excludendo, non M, tomentosa Thunberg, Fl Jap. Nov. op- 



(1824). 



Magnolia sericea Thunberg, PI. Jap. Nov. Sp. 8 (nomen nudum) (1824) 

 cundum specimen originale in Herb. Thunbergiano.* 



^ See foot-note on p. 400 of Vol. I. 



se- 



