THYMEIAEACEAE. — DAPHNE 543 



Daphne gemmata Pritzcl in BoL Jahrb, XXIX. 481 (1900). 

 Nitsche, Beitr, Kenntn. Dajphne, 29 (1907). 



Western Szech'uan: west and near Wen-ch'uan Hsien, dry re- 

 gions, alt. 1400 m., July 1908 (No. 2368, type; bush 0.30-O.GO m. tall); 

 Mien-chu Hsien, dry sunny banks, alt. 800-900 m., May 21, 1908 

 (No. 2362; shrub 15-30 cm. high); Shih-ch'uan Hsien, clifFs, alt. 900 

 m., August 1910 (No. 4614; flowers yellow) ; " Tsa-ku-lao, Wei-kuan- 

 kou," August, A. von Rosthorn (No. 2545, type). 



This species belongs to a small group of species with 5-merous flowers recently 

 discovered in western China which differ from all other species of the genus in 

 having the stamens inserted in the lower part of tube of the perianth; five stamens 

 are inserted just above the ovary and five near the middle of the tube. In Pritzel's 

 original description this is correctly stated, but Nitsche says that he found the inser- 

 tion normal. In von Rosthorn's specimen No. 2545, however, in the herbarium of the 

 Arnold Arboretum I find the insertion of the stamens exactlj^ as described by Pritzel. 

 Wilson's specimens referred to this species differ slightly from each other. In the 

 type, with which Wilson's No. 2368 agrees very well except that it has larger 

 flowers about 1.5 cm. long and somewhat curved below the middle, the leaves are 

 generally obovate-oblong to oblong-elUptic, sparingly strigose below, not glabrous 

 as described by Pritzel and the ovary is glabrous or nearly so; No. 2362 has obovate 

 to elliptic leaves nearly glabrous beneath and smaller much curved flowers with 

 the more elongated ovary slightly pilose at the apex; No. 4614 has smaller more 

 coriaceous, obovate to oblong-obovate leaves, 1-3 cm. long and very sparingly stri- 

 gose below; its flowers are shorter with more oval lobes only 2.5 mm. long; the 

 stamens are all aborted except one stamen in one of the two flowers examined; 

 the ovary is sparingly pilose at the apex. 



CONSPECTUS SPECIERUM SINENSIUM GENERIS DAPHNES. 



Infiorescentiae axillares. Folia opposita v. altema, decidua. 



Folia supra glabra. Perianthii lobi 5 mm. longi v. ultra. ... 1. D. genkwa. 



Foha utrinque pubescentia. Perianthii lobi circiter 2 mm. longi. 



2. D. Championii 



Inflorescentiae terminales, rarius terminales et praoterea axillares. 

 Flores 4-meri : discus annularis, minutus v. nullus. 

 Inflorescentia paniculata, ebracteata. Folia decidua, lineari-lanceolata. 



3. D. Eoumea 



Inflorescentia capitata v. spicata. 



Foha decidua, lanceolata. Inflorescentia ebracteata. ... 4. D. Giraldii. 



Folia persistentia. Inflorescentia bracteata. 

 Folia alterna. Flores albidi v. rosei. 

 Hamuli glabri, rarius initio leviter puberuli. 



Folia angusta, 8-12 mm. lata. Capitula pauciflora. 



Bracteae ciliatae; pedicelli hispiduli. Foha emarginato-obtusa. 



5. D. tanguiica. 



Bracteae et pedicelli glabra. Foha acuta ... 6. D. Vaillantii. 

 Folia latiora, 1-3 cm. lata. Capitula multiflora v. pluriflora. 

 Bracteae extus glabrae. 



