160 



ORDER LVIT. UMBELLIFEE^ UMBELLATE-FAMILY, 



6. Cryptotcenia. Partial Timbels with unequal rays. Fruit nearly ob- 

 long, laterally corapreseed, wingless. Leaves S-foliate. 



8. CIrum. Fruit oval, laterally compressed, wingless, Leaves somewhat 

 bi-'pinnatifld. 



_ 9. Apiit-m. Calyx-teeth obsolete. Fruit roundish, laterally compressed, 

 wingless. Lower leaves pinnately parted, 



1'3. Heraoleum. Fruit dorsally compressed, flat, with a broadly winged 

 margin. Leaves ternately parted. 



14. Da'ucus. Fruit oblong, not compressed, clothed with prickles in sepa- 

 rate rows. 



15. OsMORnizA. Fruit linear, clavate, tapering at base, with bristly ribs. 



16. CdNiUM. Calyx-teeth obsolete. Fruit ovate, Literally compressed, with 

 6 undulate ribs. Leaves bi- or tri-ternately decompound. 



17. CoRii.NDRu,M. Calyx with a distinct lube. Fruit globose. Leaves pin- 

 nately parted. 



* * * Flowers yellow. 



7. ZiziA. Fruit oval, laterally compressed. Leaves bi-ternately divided. 

 10. FcENiou-Lti-M. Fruit oblong, laterally compressed, with obtuse ribs. 



Leaves bi-ternately dissected, with liliform segments. 



12. Pastinac-v. Fruit oval, dorsally compressed, very flat, with a thin, 

 broadly winged margin. Leaves pinnately parted. 



1. nYDROCdXTLE. 

 Calyx obsolete. Petals ovate, entire, acute, spreading, with 

 the point not inflected. Fruit flattened laterally, "with a narrow 

 commissure. Carpels without vittse. Fer. 



1. H. Americana. Peitny-wort. 



Smooth and shining ; stem flexuous, branching, often decumbent ; leaves or- 

 bicular-reniform, somewhat lobed, doubly crenate ; flowers minute, gi-eenish, 

 in axillary, sessile, few-flowered, greenish, capitate umbels; fruit very minute, 

 orbicular. A smooth and delicate plant, growing in wet, grassy places. Very 

 common. Stems 2'— 4' long. Jane — Aug. 



2. BANfCULA. 

 Flowers polygamoiis. Calyx-tube echinate. Petals obovate, 

 erect, with a long inflexed point. Fruit subglobose, armed with 

 hooked prickles. Carpels not ribbed, furnished with numerous 

 vittsa. Per. 



1. S. Marilandica. Sanicle. 



Leaves digitately 5 — T-parted, mostly radical; segments oblong or cuncate, 

 incisely serrate ; cauline leaves few, nearly sessile ; flowers greenish, small, 

 mostly barren ; umbels with few rays, often prolifei-ous ; umbellets with numer- 

 ous rays; involucre 6-leaved, serrate ; sterile flowers numerous, on pedicels as 

 long as the fertile, sessile flowers; style elongated, conspicnoua and recurved. 

 A ommon plant 2 — 3 feet high, dichotomous at summit In woods and thick- 

 ets. Jane — July, 



3. DISCOPLEtTEA. 



Calyx-teeth subulate, persistent. Petals ovate, entire, with 



minute inflexed point. Fruit ovate, frequently didymous. 



Carpels with 3 prominent, filiform, dorsal ribs, and 2 lateral ones, 



united with a thick margin. Intervals with single vittae. Seeds 



nearly round. An. 



1. D. capillacea. BisJio^-weed. 



Erect or procumbent ; leaves very finely dissected, with setaceous segments; 

 umbels with 3-10 rays ; leaflets of the involucre 3—5, usually 3-parted ; involu- 

 cels filiform, longer tlian the umbellets; flowers white; fruit ovate. A veiy 

 smooth plant, 1 foot high, in salt marshes. Mass., R. L, and southward. Jidy 

 —Oct 



4. CICtTTA. 

 Calyx-margin with 5 broad teeth. Petals obcordate, with an 

 inflexed point. Fruit roundish, didymous. Carpels with 5, flat- 

 tish, equal ribs, 2 of them marginal. Intervals filled with single 

 vittse. Commissure with 2 vittse. Carpophore 2-parted. Seeds 

 terete. Involucres few-leaved, or none. Involucels many-leaved. 



1. C. maculata. Wate7' Hemlock. 



stem smooth, hollow, often streaked with purple ; lower leaves triternately 

 divided ; upper ones biternately divided ; leaflets lanceolate, acuminate, serrate, 

 smooth: flowers white, in axillary and terminal umbels; involucre-leaves none, 

 or 1—2 small ones ; involucel of 5—6 linear divisions ; calyx and style per^^ist- 

 ent ; root thick, flesby. poisonous. A common plant in wet meadows, 4—8 feet 

 high, with decompound leaves. The terminal leaflet is often pinnate or quin- 

 nate. Jul)/ — Aug, 



2. C. bulbifera. Bulbous Cicuta. 



stem round, hollow, striate, green ; axils of the branches bearing small bulb- 

 lets; leaves biternately divided; leaflets mostly linear, varying from almost 



setaceous to linear-lanceolate ; flowers small, white, in axillary and terminal 

 umbels; involucels setaceous. A slender speciesS— 5 feet high, in swamps. 

 Not so common as the last, Aicg. 



5. SiUM. 

 Calyx-margin 6-toothed or obsolete. Petals obcordate, with 

 an inflected point. Fruit nearly oval. Carpels with 5 obtuse 

 ribs. Yittte usually several in each interval. Carpophore 2-parted. 

 Fer. 



1. S. lineare. Long-leaved Sium. 



stem angular, sulcate; leaves pinnate; leaflets linear or linear-lanceolate, 

 finely serrate ; flowers white, small; involucres with 5-6 linear divisions; 

 calyx-teeth minute ; fruit obovate. A tall and stout plant, 8—5 feet high, with 

 narrow leaflets. Common, especially near the sea-coast. July. 



6. CRTPTOTiENIA. 

 Calyx-margin obsolete. Petals obcordate, with an inflected 

 point. Fruit linear-oblong or ovate-oblong. Carpels with 5 

 equal, obtuse ribs. Vittse very narrow, twice as many as the 

 ribs. Carpophore free, 2-parted. Per. ' 



1. C. Canadensis. Hone-wort. 



stem smooth, branching above ; leaves 3-partcd, petiolate; segments ovate, 

 entire, or 2 — 3-lobcd, doubly serrate ; teeth coarse, raucronate ; umbels irregu- 

 lar, axillary and terminal, somewhat paniculate, with very uneijual rays; flow- 

 ers small, \\hite ; involucres none; involucels few-leaved; fruit oblong-elliptieal. 

 A common plant in moist wood% 1 — 2 feet high, with the radical leaves on long 

 petioles, and distinguished by its irregular umbels and umbellets, July. 

 7. ZlZLV. 

 Calyx-margin obsolete, or with 5 very minute -teeth. Petals 

 oblong, with an inflexed point. Fruit oval, didymous. Carpels 

 5-ribbed, with the lateral ribs marginal. Intervals with 1 — 3 

 vittas. Commissure with 3 — 4. Involucre none. Involucels few- 

 leaved. Per. 



1. Z. aarea. Golden Alexander. 



Smooth; stem erect, or somewhat decumbent, sulcate, branching above: 

 leaves biternately divided ; segments oblong-lanceolate, serrate ; umbellets witli 

 short rays ; flowers small, deep yellow ; involucels of 2 — 3 very small leaflets ; 

 fruit elliptical, brown when mature. Not uncommon in woods and fields. 

 Stem 6'— 12' high. May— June. 



8. CAEUM. 

 Calyx-margin obsolete. Petals obovate, emarginate, with an 

 inflexed point. Styles spreading, dilated at base. Fruit oval, 

 compressed laterally. Carpels 5-ribbed, lateral ribs marginal. 

 Intervals with single vittse. Commissure with 2. Per. 



1. C. Carvi. 



Caraway. 



Leaves somewhat bi-pinnatifidly divided ; segments numerous, linear ; invo- 

 lucre 1-leaved, or none ; involucels none; flowers white. A common plant in 

 gardens, cultivated, for its aromatic fruit. Stem 2 — 3 feet high, smooth and 

 branching. Lower leaves large, on long petioles, with large, swelling sheaths. 

 June. 



9. APIUM, 



Calyx-margin obsolete. Petals roundish, with an inflected 

 point. Fruit roundish, laterally compressed. Carpels 5-ribbed ; 

 the lateral ribs marginal. Intervals with single vittse. Carpo- 

 phore undivided. Biennial. 



1. A. graveolens. Celery. 



stem branching, furrowed ; lower leaves pinnately dissected, on very long 

 petioles; segments broadly cuneate, incised; upper leaves 8-parted ; segments 

 cuneate, lobed and incisely dentate at apox ; flowers white, in umbels, with un- 

 equal, spreading rays. Cultivated in gardens for its stem and radical petioles, 

 which when blanched are eaten as salad. July — Aug. 

 10. FCENtCULUM. 

 Calyx-margin obsolete. Petals revolute, with a broad, retuse 

 apex. Fruit oblong, somewhat laterally compressed. Carpels 

 with 5 obtuse ribs ; marginal ones a little broader. Intervals 

 with single vittjse; commissure with 2. An. 



1. F. vulgare. Fennel. 



Stem round, smooth, branched ; leaves biternately dissected, with Huear- 

 snbulate, elongated segments; umbels with numerous unequal spreading rays , 



