Arisaema ARACEAE Pinellia 



Key to the Species 



a. Appendage of the spadix tapering to a slender or filamentous point, 

 somewhat swollen near the base: spathe pale green outside 



(sect. Tortuosa) 1 . A. ambiguum 



aa. Appendage of the spadix cylindric or claviform. 



Spathe tapering to a slender filamentous tip, green and glau- 

 cescent outside, purple-striped within: appendage claviform, 



tapering toward the base but not stipitate (Sect. Clavata) 2. A. consanguineum 

 Spathe acute or acuminate but not with a filamentous tip: ap- 

 pendage of the spadix stipitate, cylindric, truncate at base. 

 Blade of the spathe with margins scarcely if at all reflexed, not 



much auriculate and not helmet-shaped (Sect. Pistillata) . . 3. A. saze?isoo 

 Blade of the spathe conspicuously auriculate and helmet-shaped 



(Sect. Ringentia) 4 . A. ringens 



1. Arisaema ambiguum Engl. (E.P.IV.23 F.:187). Stout, 4-10 dm. high; fls. V; spathe 

 pale green; fr. red, IX; appendage of spadix not stipitate. Central China; locally 

 in Hun., Ku. Moist woods. 



2. Arisaema consanguineum Schott (E.P.IV. 23 F.:175). Stout, 7-10 dm. high; fls. 

 IV-VI. Temperate and subtropical eastern Asia; locally in Hun., Hup., Ki. Moist 

 woodland. 



3. Arisaema sazensoo (Burger) Mak. (E.P.IV. 23 F:209). Stout, 6-8 dm. high; fls. V; 

 spathe dark purple. Subtropical eastern Asia; locally in Che., Ku. Moist woods. 



4. Arisaema ringens (Thunb.) Schott (Mak. F. 776). Stout, 6-8 dm. high; fls. V-VIII; 

 spathe pale green and dark purple, helmet-shaped. Subtropical eastern Asia; 

 locally in Che., Ku. Moist woods. 



5. Pinellia Tenore ^1-HM (Pan Hsia Shu) 

 Erect cormose herbs with simple, ternate or pedately cleft membranous lvs. in 

 juvenile forms simple, ovate-cordate, sometimes sagittate: peduncle solitary: spadix 

 with a slender coiled exserted tip; the fig. portion enclosed by the spathe: tube of the 

 spathe constricted and more or less closed at the top: fls. unisexual; the pistillate below: 

 ovary with one ovule. 6 species, in China and Japan; 5 in China. (Named for G. V. 

 Pinelli, 1535-1601, Italian patron of learning.) 



Key to the Species 



Lf. blades simple, entire, cordate 1. P. cordata 



Lf. blades trisect, ternate or pedatisect. 



Lf. blades trisect or ternate 2. P. ternata 



Lf. blades pedatisect 3. P. pcdalisecta 



1. Pinellia cordata N.E.Brown (F.H.E.3:173). Slender, 10-15 cm. high. Central China; 

 locally in Che., Ki. Moist woods. 



2. Pinellia ternata (Thunb.) Tenore ex Breitenb. ace. to Mak. (P. tuberifera Tenore 

 ^M (Pan Hsia; Mid-summer) (Mak.F. 776). Slender, 1-2 dm. high; fls. V-VII. 

 Eastern Asia; locally in Che., Hun., Hup., Ku. Moist woods. Fig. 467 



The authority for the name Pinellia ternata has been variously interpreted. Breitenbach 

 (Bot. Zeit. 37: 687. 1879) gave Pinellia ternata Ten. as a synonym in his carefully illustrated 

 article entitled " Die Blutheneinrichtung von Arum ternatum Thnbg." Makino (Bot. Mag. Tokyo 15: 

 135-136. 1901) used Pinellia ternata (Thunb.) Breitenb., based on the first reference cited 



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