160 



ORDER LVn. UMBELLTFER.E UMBELLATE-FAMILY. 



6. CRYPTOT03NIA. Partial umbels with unequal raya Fruit nearly ob- 1 

 long, laterally compressed, wingless. Leaves 8-foliate. 



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

 bi-pinnatifid. 



9. APIUM. Calyx-teeth obsolete. Fruit roundish, laterally compressed, 

 windless. Lower leaves pinnately parted. 



13. HERACLEUM. Fruit dorsally compressed, flat, with a broadly winged 

 margin. Leaves ternately parted. 



14. DATJCUS. Fruit oblong, nut compressed, clothed with prickles in sepa- 

 rate rows. 



15. OsMORHizA. Fruit linear, clavate, tapi ring at base,' with bristly ribs. 



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

 5 undulate ribs. Leaves bi- or tri-tcrnately decompound. 



17. CORIANDRUM. Calyx with a distinct tube. Fruit globose. Leaves pin- 

 nately parted. 



* * * Flowers yellow. 



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

 10. FosxicuLUM. Fruit oblong, laterally compressed, with obtuse ribs. 



Leaves bi-ternately dissected, with filiform segments. 



12. PASTINACA. Fruit oval, dorsally compressed, very flat, with a thin, 

 broadly winged margin. Leaves pinnately parted. 



1. HYDKOC6TYLE. 



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

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

 commissure. Carpels without vittse. Per. 



1. H. Americana. Penny-wort. 



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

 bicnlar-reniform, somewhat lobed, doubly crenate ; flowers minute, greenish, 

 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. June Aug. 



2. SANjCULA. 



Flowers polygamous. Calyx-tube echinate. Petals obovate, 

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

 hooked prickles. Carpels not ribbed, furnished with numerous 

 vittse. Per. 



1. S. Marilandica. Sanicle. 



Leaves digitately 5 7-parted, mostly radical ; segments oblong or cnneate, 

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

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

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

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

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

 ets. June July. 



3. DISCOPLEURA. 



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. Bishop-weed. 



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

 umbels with 3-10 rays ; leaflets of the involucre 35, usually 3-parted ; involu- 

 cels filiform, longer than the umbellets ; flowers white ; fruit ovate. A very 

 smooth plant, 1 foot high, in salt marshes. Mass., E. I., and southward. July 

 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 

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

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



1. C. maculata. Water Hemlock. 



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

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

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

 or 12 small ones; involucel of 56 linear divisions; calyx and style persist- 

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

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

 nate. July Aug. 



2. C. bulbifera, 



Bulbous Cicuta. 



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

 leU; leaves biternately divided ; leaflets mostly linear, varying from ajmost 



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

 umbels: involucels setaceous. A slender species 3 5 feet high, in swamps. 

 Not so common as the last Aug. 



6. SlUM. 



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

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

 ribs. Vittse usually several in each interval Carpophore 2-parte J. 

 Per. 



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, 35 feet high, with 

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



6. CRYPTOTJENIA. 



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-lobed, doubly serrate ; teeth coarse, inucronate ; umbels irregu- 

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

 ers small, white ; involucres none; involucels few-leaved ; fruit oblong-elliptical. 

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

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



7. ZlZIA. 



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 

 vittse. Commissure with 34. Involucre none. Involucels few- 

 leaved. Per. 



1. Z. aiirea. Golden Alexander. 



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

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

 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. ClRUM. 



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 vittae. 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 vittae. 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 3-parted ; segments 

 cuneate, lobed and Incisely dentate at apex ; 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. F<ENfCULUM. 



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 vittae ; commissure with 2. An. 



\. F. vulgare. Fennel. 



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

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



