CAPKIFOLIACEAE. ABELIA 123 



from eastern to western China, the fourth, Vesaleae, is Mexican, the fifth, Corym- 

 bosae, is Central Asiatic, while the last, Biflorae, extends from Mongolia to 

 western China. 



KEY OF THE SPECIES. 



* Ramuli pilis villosis v. patentibus instruct! v. puberiilis v. glabri, nodis non in- 

 crassatis; petioli basi non dilatati nee connati; corolla campanulato- 

 infundibuliformis staminibus styloque faucem superantibus; achaenia teretia 

 v. subteretia. 



Sect. I. EUABELIA. 

 t Pedunculi semper biflori, solitarii in apice ramulorum lateralium brevium; 



ramuli solidi medulla angusta Subsect. 1. SERRATAE. 



Sepala 5 1. A. spathulata. 



Sepala 2. 



Folia parva ad 3 cm. longa; sepala apice 2-3-dentata; corolla 1.5 cm. 

 longa, apicem versus sensim ampliata, limbo suberecto, rosea. 



2. A. serrata. 

 Folia majora, ad 6 cm. longa; sepala apice plerumque obtusa v. obtusius- 



cula, rarius leviter excisa. 

 Achaenia pilosa; sepala ovata; folia serrata; corolla 2 cm. longa, infundi- 



buliformis, limbo patente, lactea 3. A. Buchwaldii. 



Achaenia glabra; sepala lanceolata; folia parcius serrata v. fere integra. 



4. A. gymnocarpa. 

 ft Pedunculi uniflori, rarius pluriflori, axillares, saepe apice ramulorum inflores- 



centias pluri- v. multiflores formantes. 

 t Sepala 2; stamina quam corolla breviora; pedunculi uniflori; ramuli 



anguste fistulosi Subsect. 2. UNIFLORAE. 



Folia acuminata. 



Ramuli glabri (in A. uniflora interdum puberuli). 



Corolla 2.5-3 cm. longa, sepalis triple longior, plerumque e tubo 



angusto paullo infra medium v. medio ampliata. 

 Folia integra v. minute obsoleteque denticulata, 4-7 cm. longa, 

 longe acuminata; pedunculi axillares pluriflori. 



5. A. macrotera. 

 Folia serrulata v. dentata. 



Corolla e medio ampliata, infra medium anguste tubularis; 

 pedunculi uniflori, axillares in apice ramulorum elongatorum; 

 folia parva, 1.5-2.5 cm. longa, serrulata. 



6. A. longituba. 

 Corollae pars tubularis vix tertiam partem corollae formans; 



folia 3-6 cm. longa. 



Folia subcoriacea, glabra. Pedunculi 1-3-flori in apice ramu- 

 lorum elongatorum inflorescentias plurifloras formantes; 

 corolla fere campanulata, basi breviter tubulosa. 



7. A. uniflora. 



Folia membranacea plerumque pilosa. Pedunculi uniflora in 

 apice ramulorum brevium, corollae pars tubularis fere 

 tertiam partem corollae formans. 



8. A. Graebneriana. 



Corolla 1.5-2 cm. longa, e tubo brevi campanulata, sepalis duplo 

 longior; flores in apice ramulorum brevium. 



9. A. Engkriana. 



