I ARUM FAMILY, 



i. ARISAEMA Mart. Flora, 14:459. 1831. 

 Perennial herbs with acrid corms, simple scape* and I to j tleo 

 ves unfolding with the flowers. Spadix included or exserted 

 base. Spathe convolute, open or contracted at the throat. Flower* dioeci 

 cious, without any perianth, the staminate of 4 almost *e**ile a-4-crlled ant 

 by confluent slits at the apex, the pistillate with an ovoid or K loUc i-ccll< 

 ing i or many orthotropous ovules; style very short or noiir. I,J, |H .,I 

 stii.ma. Fruit a globose red berry, the clusters usually lar K e and ~-*r*t<(nrm wb 

 jds with copious endosperm and an axial embryo, [tirtck. in reference to 

 itched leaves of some species.] 



About 50 species, mostly natives of temperate and subtropical Aia. Ikaliln tW fellm 



other occurs in the mountains of North Carolina 



th 



athe hooded, open at the throat, enclosing the : 

 athe convolute; summit of the spadix e\ 



Arisaema triphyllum (L,.) Torr. Jack-in -tlu-ptih. n Turnip 



(Fig. 876.) 



it HI triphyllum L. Sp. PI. 965. 1753. 



isaema atrorubens Bhime, Rumphia. i: 97. 1835. 



isaema triphyllum Torr. Fl. N. Y. 2: 239. 1843'. 



veaves i or 2, nearly erect, io'-3 high, usually 

 sding the scape, 3-foliolate, the segments ovate, 

 atire, or sometimes lobed, acute rounded or nar- 

 rowed at the base, 3 / -7 / long, \ l /t'-^}^' wide, 

 sessile or very short-stalked; flowers commonly 

 dioecious, yellow, borne on the basal part of the 

 spadix; spadix 2 / -3 / long, its naked summit blunt, 

 colored; spathe green, and purple-striped, curving 

 in a broad flap over the top of the spadix, acumi- 

 nate; filaments very short and thick; ovaries 

 crowded; ovules 5 or 6; berries smooth, shining, 

 about 5 /x in diameter, forming a dense ovoid head 

 i '-3' long. 



In moist woods and thickets, Nova .Scotia to Florida. 



west to Ontario, Minnesota, Kansas and Louisiana. 



ids to 5000 ft. in North Carolina. April-June. 



Fruit ripe June-July. The acrid bulb made edible by 



boiling. 





2. Arisaema Dracontium (L.) Schott. Green Dragon. Dragon-root. 



(Fig. 877.) 



Arum Dracon tin m I. Sp 1M / . 



Arisaema I)rai<>ntinni Schott M ' i t8j*. 



Corms clustered. Leaves usually solitary. 

 long, pedately divided into 5-17 Kgmenta, much 

 longer than the scape; segment* oborate or oblong. 

 3 / -io / long, 9"-4' wide, abruptly acute at the 

 narrowed to a sessile or nearly tewile b*c. etir or 

 the lateral ones somewhat lobed; scape thutbtd 

 membranous scales at the be; spath* grrenwh or 

 whitish, narrowly convolute, acuminate, t ' >' loC. 

 i-n\\ rapping the spadix. the upjwr part of * 

 into a slender appendage cx^-rtcd i ' 

 apex; inflorescence of the taminate plant ne: 

 long as the tubular part of the spathe; in ih* mo 

 cious plant the pistillate flower* are borne on the k 

 part of the spadix; ovary turbjnatr. 

 shaped ovules; stigma* depressed; berrfa* r 

 orange in large ovoid bead*. 



Mostlv in wet wood* and alaog j* l "'^ b '** o "2 



in dry soil. - 



Florida. Kansas :ind Te. May-Jl 



