CAPRIFOLIACEAE. — 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. 



* RamuH pilis villosia v. patentibus instructi v. puberulis 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 PeduncuH semper biflori, solitarii in apice ramulorum lateraUum brevium; 



ramuH solidi medulla angusta Subsect. 1. SERRATAE. 



Sepala 5 1. A. spathulala. 



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. 

 Foha 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. Umbo patente, lactea 3. ^4.. Buchwaldii. 



Achaenia glabra; sepala lanceolata; foha parcius serrata v. fere Integra. 



4. A. gymnocarpa. 

 tt PeduncuH unifiori, rarius plurifiori, axillares, saepe apice ramulorum infiores- 

 centias pluri- v. multiflores formantes. 

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



anguste fistulosi Subsect. 2. UNIFLORAE. 



Folia acuminata. 



Ramuli glabri (in A. uniflora interdum puberuli). 



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

 angusto paullo infra medium v. medio ampUata. 

 Foha Integra v. minute obsoleteque denticulata, 4-7 cm. longa, 

 longe acuminata; peduncuU axillares plurifiori. 



5. A. macrotera. 

 Folia serrulata v. dentata. 

 Corolla e medio amphata, infra medium anguste tubularis; 

 pedunculi unifiori, axillares in apice ramulorum elongatorum; 

 foUa 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 bre\'i campanulata, sepalis duplo 

 longior; flores in apice ramulorum brevium. 



9. A. Engleriana. 



