SERIES I. PH^ENOGAMIA. 



CLASS I. EXOG-EN-aS . 

 SUBCLASS I . AN GI O S P E R M 



SECTION I POLYPETAL&. 



ORDER I. Ranunculacese. Crowfoot-family. 



SYNOPSIS OF THE GENERA. 



* Cnuline leaven opposite. 



1. CLEMATIS. Petals none. Acbenia terminating In long, plumose tails. 



* * 1 1 :i ii 1 1- - i i- ii I . 



3. HEPATICA. Flowers with an involucre of three obtuse leaves resembling 

 a calyx. Sepals petaloid. Petals none. 



7. Corns. Sepals petaluld, white. Petals minute, yellow. 



* * * Caulescent. Petals none. 



2. AxixoxE. Stem with a whorl of leaves near the middle, forming an In- 

 volucre. Flowers solitary. Ovaries In dense heads. 



4. THAIJCTRUM. Flowers In panicles or umbellate clusters. Leaves com- 

 pound. 



C. CAI/THA. Bepals large, yellow. Caullne leaves alternate, simple. 



* Caulescent. Petals present* equal in size. 



5. 'Bx6KCin.cs. Bepals herbaceous. Petals mostly yellow, with a necta- 

 riferous scale at the base. Ovaries numerous, separate, In dense heads. 



8. Ao.im.ioiA. Bepals petaluld. Petals tubular, tapering into long, hollow, 

 nectariferous spurs descending between the sepals. Follicles 5. 



11. ACT.KA. Sepals deciduous, flowers In solitary racemes, petals small, 

 white ; fruit a globose berry. 



IS. PXOMI. Sepals 6, herbaceous, persistent Ovaries 35, follicles 

 mostly 2. 



la NioiLLA. Petals 8-cIeft. Follicles S. Leaves dissected. 



***** Canlccent. Petal* and Sepals present, un- 

 equal In size. 



9. DELPUJSICTM. Lower sepal spurred at base. Petals 4, 2 upper terminat- 

 ing In a spur Inclosed in the calyx spur. 



10. AcoxlTOH. Upper sepal largest, vaulted. Petals 8, 8 lower minute ; 

 2 upper terminating In spurs concealed in the vaulted upper sepal. 



1. CLEMATIS. 



Sepals 4 8, colored. Petals none. Anthers linear, extrorse. 

 Achenia terminating in long, plumose tails. Per. 



1. C. Virginiina. 



Virgin's Bower. 



Stem climbing by Its petioles ; leaves female, smooth ; leaflets ovate, some- 

 what cordate at base, acuminate, dentate ; flowers In panicles, axillary, often 

 diacloua, white ; sepals pubescent ; fruit covered with long hairs, which cause 

 the plant, when in fruit, to appear at a distance as If In bloom. A vine climbing 

 over the boshes, In thickets and low grounds, 1015 feet long. A ug. 



2. ANEMONE. 



Involucre distant from the flower, composed of 3 incised 

 leaves. Sepals & 15, petaloid. Ovaries collected into roundish 

 or oval heads. Achenia mucronate. Per. 



1. A. nemerdsa. Wood Anemone. 



Stem simple, smooth ; leaves ternate; leaflets 8 6-lobed; lobes oblanceo- 

 late, dentate ; Involucre of 8 leaves, on short petioles near the top of the stem ; 

 Bowem solitary, nodding, somewhat campannlate, white, purplish ontnide ; 



beads of achenla small, globose. A pretty little plant growing from 8' 6' high. 

 In old woods and thickets. April J/i/y. 



2. A. Virginiana. Wind-flower. 



Stem pubescent ; leaves ternate ; leaflets petiolulate, 2 3-cleft, orate, dentate, 

 pubescent ; flowers greenish white, with the sepals pubescent beneath, on long 

 peduncles ; heads of fruit f long, woolly, oblong, cylindrical ; stem 28 feet 

 high, with a 8-leavcd Involucre, from which arise 2 i long, pubescent pedun- 

 cles. A coarse-looking plant, very different from the foregoing. Pastures and 

 fields. June July. 



8. HEPATICA. 



Involucre resembling a calyx, very near the flower, composed 

 of 3 ovate, obtuse bracts. Sepals petaloid, 6 9 in number, ar- 

 ranged in 2 3 rows. Petals none. Achenia awnlcss. Per. 



1. H. triloba. Heart Liverwort. 



Acaulescent; leaves broadly cordate, mostly 8-lobed, with the lobes entire, 

 smooth, evergreen, on long, hairy petioles ; scapes hairy, 1-flowcred, flower nod- 

 ding; Involucre resembling a calyx, green, hairy ; sepals varying from a bluish 

 purple to nearly white, scarcely as long as the bracts of the involucre, oblong, 

 obtuse. A beautiful little plant growing on wooded hill-sides, and one of the 

 earliest to appear in spring, sometimes peeping out before the snow has entirely 

 gone. March April. 



4. THALlCTRUM. 



Sepals 4 5, petaloid, caducous. . Petals none. Stamens nu- 

 merous. Carpels 4 15, tipped with the stigma, falcate. Per. 



1. T. dioicurn. 



Very smooth ; stem erect ; leaves bl- or tritcrnatoly decompound ; leaflets 

 rhomboidal, obtuse, 8 6-lobed ; flowers dicccious or polygamous, green, panl- 

 cled, with a long peduncle ; sepals 5, purplish, obtuse, caducous ; stamens of the 

 barren flowers with long filaments and bright yellow anthers ; fertile flowers 

 smaller, with 63 shorter stamens. A branching green herb, of no beauty, 

 found In rocky woods, I 2 feet high. April May. 



2. T. Cornuti. Meadow Rue. 



Stem erect,- branching, smooth ; loaves trttcrnate, sessile ; leaflets rhomboi- 

 dal, 2 8-lobed, mostly smooth ; flowers In large, terminal, compound panicles, 

 white, small, dioecious or polygamous; sepals white, oblong, caducous; fila- 

 ments somewhat clavato. A tall plant growing In wet meadows, 8 6 feet high, 

 with very largo leaves, and a hollow rounded stem. June July. 



3. T. anemonoides. Rue Anemone. 



Stem low, simple, smooth ; radical leaves biternate, on long petioles ; leaf- 

 lets rhomboidal, 2 8-lobed ; stem leaves 8, ternate, nearly sessile, vertlcillate, 

 resembling an involucre ; leaflets nearly sessile ; flowers much larger than those 

 of the other species, 86, in a terminal umbel ; sepals 6 10, oval, white, 

 sometimes tinged with purple, not caducous. The root consists of 4 oblong 



