TRILLIUM. CLII. TRILLIACE^E. 545 



slightly acuminate, 3-veined; umbels on very short peduncles, which are 

 arranged alternately on a common rachis. N. J. to Ga. A vigorous, evergreen 

 climber, ascending trees to a great height. Stem with few scattered prickles. 

 Leaves numerous, very thick and smooth. Raceme of umbels longer than the 

 leaves, peduncles shorter than the ultimate pedicels. Jn. Aug. 



4. S. PANDURATUS. Pursh. (S. tamnoides. Ell.) 



St. branched, terete, aculeate ; Ivs. ovate, somewhat pandurifonn, acumi- 

 nate, cordate, 3-veined ; ped. twice as long as the petioles ; umbel many-flow- 

 ered ; berries black. In sandy woods, N. J. to Car. Stem twining, 6 12f. 

 Leaves smooth and shining both sides, with shallow depressions or sinuses on 

 each edge. July. 



* Stems shrubby, unarmed. 



5. S. PSEUDO-CHINA. 



St. terete, unarmed ; caidine Ivs. ovate, cordate, ramial ovate-oblong, 

 all 5- veined, on short petioles; ped. very long. Sandy woods, N. J. to 

 Car., W. to Ohio. Root large, tuberous. Stem purplish-brown, very smooth, 

 branching and climbing by tendrils which arise from the base of the petioles. 

 Leaves 24' by 1 2', slightly hispid on the veinlets beneath. Peduncles lon- 

 ger than the leaves. May, Jn. 



* * * Stem herbaceous. 



6. S. HERBACEA. (S. pedunculata. Muhl.} 



St. herbaceous, unarmed, angular, erect, or inclining ; Ivs. ovate, 79- 

 veined, cuspidate; umbels on long peduncles. A coarse, smooth, ill-scented 

 plant, in thickets and low grounds, N. Eng. to Ky. and Wise. ! Stem slightly 

 angled, 3 6 or 8f high, usually nodding with its slender summit and few small 

 branches, and leaning on other plants or on each other. Leaves 2 4' by 1J 3, 

 often roundish, paler beneath, the petioles winged at base and producing a long, 

 slender tendril from the top of each wing. Fertile umbels simple, about 40- 

 flowered, on peduncles 6 8' long, those of the sterile umbels shorter. Flowers 

 yellowish-green, diffusing about the plant an intolerably offensive and sicken- 

 ing odor. Berries dark blue. Jn. 

 /?. St. more generally climbing by its tendrils ; Ivs. broadly ovate, subcordate. 



7. S. LASIONEURON. Hook. 



St. terete, climbing, subsimple, unarmed ; Ivs. oblong, broadly ovate, cor- 

 date, rounded and mucronate at apex, 7-veined, glaucous and hispid-pubescent 

 on the veinlets beneath, glabrous and green above ; ped. a little longer than the 

 petioles, many-flowered; tendrils from the base of the petioles. Green Co., 

 Ind. ! also Can. Stem 3 6f high. Peduncle much shorter than the leaves, 

 which are often about 4' by 3'. v 



ORDER CLII. TKILLIACEJE. TRILLIADS. 



Herbs with simple stems, tuberous roots and verticillate, net-veined leaves. 



Fls. 'large, terminal, solitary r perfect, trimerous, rarely tetramerous. 



Cal. Sepals 3, green or herbaceous. Cor. Petals 3, larger than the sepals, colored or herbaceous. 



Sta. 610. Fit. subulate. Anth. linear, with cells on their edges and the connectile extended. 



Ova. free, 3 5-celled. Sty. distinct. Stig: small. Ovu'es 00, in 2 rows, ascending. 



Fr. succulent, 3 5-celled. Sds. 00. Embryo minute, in fleshy albumen. 



Genera 4, species 30, in woodlands, temperate parts of Europe, Asia and N. America. The roots of 

 some species are emetic. 



Genera. 



$ in one whorl. Trillium. 1 

 Leaves { in two whorls. Medeola. 2 



TRILLIUM. Miller. 



Lat. trilix, triple ; because the sepals, petals, carpels, cells, stigmas and leaves are in 3s. 



Perianth deeply 6-parted, in 2 distinct series, outer of 3 sepals, 

 inner of 3 colored petals ; stamens nearly equal ; stigmas sessile, 

 distinct or approximate ; berry 3-celled ; cells many-seeded. ^ 

 Stem simple. ' Lvs. 3, ivhorled at the top of the stem, reticulate-palmate- 

 veined. Fls. solitary^ terminal. 



