520 ORDER CXX. TRILLIACE^E. 



Order CXX.— TRILLIA'CEJS. (Trillium Family.) 



Flowers perfect. Sepals 3. Petals 3. Stamens 6. Ova- 

 ry 3-celled, few or many seeded. Herbaceous plants, with 

 leave* in 1 — 2 whorls. Flowers at the summit of the stem. 



Genus I— TRIL'LIUM. L. 6—3. 

 (From ti'ilex, triple, in allusion to its floral organs.) 



Perianth 6-parted, the 3 outer resembling a calyx, the 3 inner 

 petaloid. Stamens 6, inserted into the base of the segments. 

 Stigmas 3, usually distinct. Fruit 3-celled, many-seeded. 



1. T. ses'sile, (L.) Stem erect, glabrous, spotted, with sheaths at the 

 base. Leaves 3, at the summit of the stem, sessile, broad-ovate, acute. 

 Flowers sessile, erect ; the petal-like segments lanceolate, erect, twice as 

 long as the calyx. Fruit glabrous, dark purple. — Dark purple. 2f . 

 March — April. Eich lands. Common. 6 — 12 inches. 



2. T. disco'lor, (Wray.) Flowers sessile, erect. Petals obovate, 

 spatulate, erect, twice as long as the spreading calyx. Leaves sessile, 

 3, roundish-ovate, acute, spreading, smooth, spotted, paler beneath, 5- 

 nerved. Stem erect, purple, green above. Ovary ovate, 3-lobed, 

 greenish-purple. Styles linear, purple externally, yellow within. — Geo. 

 2f. 6 inches. 



3. T. recurva'tum, (Beck.) Stem erect, purple below. Leaves peti- 

 olate, ovate, acute, spotted, 5-nerved, paler beneath. Flowers sessile, 

 erect. Petals unguiculate, ovate-oblong, acuminate, erect. Sepals re- 

 flexed, ovate-lanceolate, acute, 3-nerved, green. — Lou. 



4. T. pusil'lum, (Mich.) Plant small. Leaves sessile, oval, oblong, 

 obtuse. Peduncle erect. Petals scarcely longer than the calyx. — 

 Flesh-colored. 2f . May — June. Pine-barrens. 6 — 8 inches. 



5. T. erec'tum, (L.) Leaves broad, rhomboid, acuminate, sessile. 

 Peduncle inclining. Flower nodding. Petals ovate, acuminate, flat, 

 broader than the calyx. Dark purple or white. 2f. May— June. 

 Common. 



6. T. grandiflo'rum, (Salis.) Leaves rhomboid-ovate, broad, sessile, 

 acuminate. ' Peduncle erect or slightly inclined. Floiver nearly erect. 

 Pelah longer than the calyx, spatulate-lancoolate. — White or reddish. 

 2f. May — June. Banks of streams. 8 — 12 inches. 



7. T. erythrooar'puk, (Mich.) Leaves ovate, acuminate, rounded at 

 the base, abruptly contracted into a short petiole. Peduncle erect or 

 declining. Petals ovate-lanceolate, recurved, broader than the calyx. 

 — White, with purple veins. If. May — June. Shady woods. 6 — 8 

 inches. 



8. T. ckr'nuum, (L.) Leaves rhomboidal, acuminate, very large, on 

 rather long peduncles. Petioles^ recurved. Petals lanceolate, acu- 

 minate, reflezed, about as long as the calyx. — White, 2f . April — May. 

 Rocky places. 12 — 18 inches. 



9. T. Cates'b^ei, (Ell.) Leaves obovate and oval, acuminate, attenu- 

 ate at the base. Peduncle recurved. Petals lanceolate, expanding, 



