546 CLII. TRILLIACE.E. TRILLIUM. 



1. T. SESSILE. Sessile-flowered Trillium. 



Los. broad-ovate or suborbicular, rather acute, sessile ; fl. closely sessile, 

 erect; sep. erect, ovate-lanceolate or lanceolate, acute; pet. linear-lanceolate, 

 purple, a third longer than the sepals ; anth. long, erect. A small species in 

 fertile soils, Middle, Western (dark ! Plummer /) and Southern States. Rhi- 

 zoma horizontal, thick. Stem b 8' high, slender. Leaves rather thick, 1 2' 

 by 1 2', smooth and entire. Sepals green, about 8" by 3", the petals narrower 

 and much longer, dark purple. Apr. May. 



2. T. RECURVATUM. Beck. 



Lvs. ovate or obovate, attenuated to a petiole, acute ; fl. closely sessile ; 

 pet. lanceolate-ovate, very acute, attenuate at base, erect, as long as the recurved 

 sepals. A small Trillium quite distinct, although allied to the last, in shady 

 woods, Wis., Lapham ! 111., Jenney! Mo., Beck. Stem 8 10' high, rather thick. 

 Leaves 2 2j' by 1 2', with distinct, short petioles. Petals purple, and with 

 the green, reflexed sepals about 1' long. May. 



3. T. ERYTHROCARPUM. Michx. (T. pictum. Ph.} Smiling Wake-robin. 

 Lvs. ovate, acuminate, rounded at base, abruptly petioled ; ped. erect ; pet. 



lanceolate-ovate, recurved, twice as long as the sepals. Can. to Ga. A beauti- 

 ful flower, adorning our woods in May and June. Stem 8 12' high, with a 

 whorl of 3 broad-ovate leaves at top. These are 3- veined, rounded at base, long 

 acuminate, 3 4' long, as wide, petiole 2 3" long. Flower nearly erect. 

 Petals wavy at the edges, white, finely radiated with purple lines at base. The 

 root is considered medicinal. 



/?. Cleavelandicum. Wood. (T. Cleavelandicum. Swallow .') -Sep. developed 

 into leaves, which are but little smaller than the true leaves; pet. 6, the 3 outer 

 but partly colored. Otherwise as in a. Brunswick, Me. ! This is probably a 

 metamorphosis ; but Mr. S. has gathered it three years in succession, and also 

 finds it thus far unaltered when cultivated from the root. Its claims to the 

 rank of a species must be tested by plants reared from the seeds. ( Dr. T. 

 Richard comm.) 



4. T. PUSILLUM. Michx. (T. pumilum. Ph.} 



Lvs. oval-oblong, obtuse, sessile ; ped. erect ; pet. scarcely longer than the 

 calyx. Penn., Muhlenberg. A very small species. Petals flesh-colored. This 

 plant appears to be lost to the later botanists. 



5. T. NIVALE. Riddell. Snowy Trillium. 



Rt. tuberous, premorse ; st. low ; Ivs. ovate or oval, rather obtuse, distinctly 

 and abruptly petiolate; /. short, pedunculate, erect; pet. spatulate-obovate, 

 obtuse, white, one-third longer than the calyx. The smallest species here 

 described, in stony or dry fields, Ohio, Clark! Wis., Lapham! Stem 2 4' high, 

 from a thick, tuberous root. Leaves 8 18" by 5 12", petioles 2 4", about 

 equaling the peduncle. Sepals green, much narrower than the snowy petals 

 which are about 8" by 4". Mar. Apr. 



6. T. PENDULUM. Muhl. (T. cernuum. Dart., Ph.,'fyc.} Drooping Tril- 

 lium. Lvs. suborbicular-rhomboidal, abruptly acuminate, shortly petio- 



liate ; fl. cernuous, on a recurved peduncle. A large species, with a small 

 flower, Mid. and W. States ! Stem slender, 10 15' high. Leaves 3 5' diam., 

 nearly round, on petioles 1" long. Flower white, pendulous beneath the leaves. 

 Peduncle 1 2' long. Sepals green, oblong-lanceolate, acuminate, 1' long. 

 Petals oblong-ovate, acute, 1%' by J', white. Stigmas erect, recurved at top, 

 lower part styloid (or styles 3, erect, with recurved stigmas !). May, Jn. 



7.. T. ERECTUM. (T. atropurpureum. Curt.} Bath Flower. 



Lvs. rhomboidal, acuminate, sessile; ped. inclining; fl. nodding; pet. 

 scarcely longer, but much broader than the sepals. A conspicuous plant in 

 woods, of fine appearance, but of an intolerably offensive odor. At the top of 

 the stem, which is a foot high, is a whorl of 3 leaves which are 3-veined, 3 5' 

 long, of equal width, and a single, nodding flower, on a nearly erect peduncle. 

 Petals broad-ovate, an inch long, twice as wide as the sepals and of a dusky 

 purple, greenish outside. May. 



