CARROT FAMILY 169 



11. BERULA Hoffm. Water Parsnip. l. B. erecta. 



12. CARUM L. Caraway. l. C. carui. 



13. LIGtJSTICUM L. 



Stem leafy; divisioiis of the leaves not flUform. 



tntimate divisions of the leaves 2-3 cm, wide; involucels none. 1. L. verticillatum. 

 Ultimate divisions of the leaves less than 2 cm. wide, laciniate or plnnatifid. 

 Ultimate divisions of the leaves ovate to lanceolate. 



Lateral primary divisions less than half as long as the terminal one; leaves 

 therefore appearing pinnate; oil-tubes in the intervals 3, on the com- 

 mlssure 6-8. 3. L. simulans.. 



Lateral primary divisions at least two-thirds as long as the terminal one; the 

 leaves therefore appearing ternate; oil-tubes in the intervals 4-6, on 

 commissure 6-10. 

 Secondary leaflets not cleft to near the midrib ; fruit 4 mm. long. 



2. L. Canbyi. 

 Secondary leaflets cleft to near the midrib ; fruit 5-6 mm. long. 

 Leaves thin and dark green. 



Fruit almost 5 mm. long; stylopodlum conic. 4. L. Leibergii. 

 Fruit about 6 mm. long; stylopodiiun low and broad. 



Ultimate lobes of the leaves lanceolate, 5-10 mm. long. 



5. L. Porteri. 

 Ultimate lobes of the leaves ovate or oblong-ovate, usually less 

 than 5 mm. long. 6. L. brevilobum. 



Leaves thicker, pale green. 7. L. afflne. 



Ultimate divisions of the leaves or teeth Unear or linear-lanceolate. 



8. L. filicinum. 

 Plant subscapose or with a single leaf; ultimate divisions of the leaves linear-flliform. 



9. L. ienuifolium. 



14. LIGUSTICELLA Coult. & Rose. l. L. Eastwoodae. 



14. BUPLEURUM L. 



Plant \isually over 1 dm. high; bractlets lanceolate, acute, yellowish green; fruit about 

 5 mm. long. 1. B. amencanum. 



Plant usually less than 1 dm. high; bractlets obovate or eUiptic, obtuse, dark green; 

 fruit 3 mm. long; flowers usually purplish. 2. B. purpureum. 



16. ZIZIA Koch. Alexanders, Meadow Parsnip. 



Basal leaves, at least the earlier ones, simple, cordate. 1. Z. cordata 



Basal leaves ternate. 2. Z. aurea. 



17. MUSINEON Raf. 



Divisions of the leaves obovate or oblong, toothed; rachis dilated. 

 Fruit glabrous or shghtly puberulent. 



Plant evidently caulescent; basal leaf-sheath not scarious, slightly dilated. 



!• iWi divQ/ricctt'UiiTt 

 Plant with the stem above ground very short; basal sheath strongly dilated and 

 . scarious. 2. M. pedunculatum. 



Frmt strongly scabrous-puberulent. 



Divisions of the leaves obtuse. 3. M. trachyspermum. 



Divisions of the leaves acute or acuminate. 4. M. angustifolium 



Divisions of the leaves linear or liuear-obloug, entire; rachis not dilated; leaf-sheath 

 strongly dilated. 5. M. vaginatum. 



18. DAUCOPHYLLUM (Nutt.) Rydb. 



Leaves bi- or tri-pinnate; segments filiform; bractlets not exceeding the pedicels; seeds 



subterete. 1. £. ienuifolium. 



Leaves pinnate; segments narrowly linear; bractlets longer than the pedicels; seeds 



somewhat depressed. 2. D. lineare 



19. ALETES Coult. & Rose. 



Peduncles longer than the leaves ; branches of the umbels short. 



Leaflets rounded-obovate in outline; their teeth ovate; fruit 5-6 mm. long. 



_ „ ^ . , . . 1. A. obovata. 



Leaflets rhombic-cuneate m outhne, mcised-toothed, with lanceolate-acuminate teeth; 

 r. ., fruit 4-5 mm. long. 2. A. acaulis. 



Peduncles shorter than the leaves; branches of the umbels nearly as long as the peduncles. 



3. A. humilis, 



20. OREOXIS Raf. 



Oil-tubes more than one in each interval; plant less than 1 dm. high, glabrous. 

 Bractlets linear, entire. 1. o. humilis. 



Bractlets obovate or oblanceolate, toothed. 2. O. Bakeri. 



Oil-tubes solitary in each interval. 



Plant less than 1 dm. high, more or less pubenilent, at least the upper part of the 

 peduncle; leaflets cleft into 1-7 linear divisions, which are 4-5 mm. long; fruit 

 4-5 mm. long. 3. Q. alpina. 



