THYMELAEACEAE. — DAPHNE 543 



Daphne gemmata Pritzel in Bot. Jahrh. XXIX. 481 (1900).— 

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



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

 gions, alt. 1400 m., July 1908 (No. 2368, type; bush 0.30-0.60 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 exactly 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-elliptic, 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. 



Inflorescentiae axillares. Folia opposita v. alterna, decidua. 



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

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



2. D. Cham-pionii. 

 Inflorescentiae terminales, rarius terminales et praeterea axillares. 

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



Inflorescentia paniculata, ebracteata. J'olia decidua, lineari-lanceolata. 



3. D. Roumea. 

 Inflorescentia capitata v. spicata. 



Folia decidua, lanceolata. Inflorescentia ebracteata. ... 4. Z). Giraldii. 

 Folia persistentia. Inflorescentia bracteata. 

 Folia alterna. Flores albidi v. rosei. 



Ramuli glabri, rarius initio leviter puberuli. 



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



Bracteae cihatae; pedicelli hispiduli. Folia emarginato-obtusa. 



5. D. (ongutica. 

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

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

 Bracteae extus glabrae. 



