546 CLII. TRILLIACEiE. Trillium. 



x'l. T. SESSILE. Sessik-flozvered Trilliuni. 



^Lvs. broad-ovate or suborbicular, rather acute, sessile ; Jl. closely sessile, 

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

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

 fertile soils. Middle, Western (C/ar/c' Plummer!) and Southern States. Rhi- 

 zoma horizontal, thick. Stem b — 8' high, slender. Leaves rather thick, IJ — 2 J' 

 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 ; jl. 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., Jcnncy! Mo., Beck. Stem 8 — 10' high, rather thick. 

 Leaves 2—2^' by 1* — 2', with distinct, short petioles. Petals purple, and with 

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



3. T. ERYTHROCARPUM. Michx. (T. pictum. PA.) 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. 



/?. Cleavelandicuvi. 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. (Z?a T. 

 Rickard 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. Sncnmj Trillium. 



Rt. tuberous, premorse; st. low; Zw. 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. Bart., Ph., tf-c.) Drooping Tril- 

 liuvi. — Lvs. suborbicular-rhomboidal, abruptly acuminate, shortly petio- 



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

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

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

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

 Petals oblong-ovate, acute, \\' by *', 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 Floicer. 



Lvs. rhomboidal, acuminate, sessile; ped. inclining; Jl. 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 floAver, 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. 



