CARROT FAMILY 173 



Involucels none, or of a few linear-subulate or filiform bractlets. 

 Plant glabrous up to the inflorescence. 

 Fruit glabrous or nearly so. 



Fruit 3-3.5 mm. long; oil-tubes solitary in the interval, except in the 



lateral ones, where they are usually in pairs. 4. A. Icporina. 



Fruit over 5 mm. long; oU-tubes solitary in all the intervals. 



Leaves once pinnate, or the lower primary divisions short-petioled 



and again pinnate. 5. A. pinnata. 



Leaves ternate and then pinnate, the lower primary divisions long- 

 petiolate. 

 Divisions of the leaves and their teeth lanceolate, acuminate. 



6. A. arguta. 

 Divisions of the leaves and their teeth ovate, acute or obtuse. 



Teeth of the leaves acute; plant perfectly glabrous. 



7. A. Lyallii. 

 Teeth of the leaves obtuse, with a callous mucro; leaves 



slightly pubescent on the sheaths, leaf-stalks, and veins 

 beneath. 8. A. Piperi. 



Fruit hispid; leaves twice compound. 



Rays numerous; leaflets broadly ovate or obovate; pedicels longer than 



the fruit. 9- A. dilatata. 



Rays few; leaflets lanceolate or linear-lanceolate; pedicels and fruit 

 subequal. 10. A. Kingii. 



Plant more or less scabrous or pubescent, at least on the sheath, leaf-stalks, 

 and veins beneath. 

 Fruit glabrous; leaves sparingly short-hispid on the sheaths, petioles, and 



veins. 8. A. Piperi. 



Fruit hispid or rough-puberulent; leaves rough-pubescent. 



Oil-tubes solitary in the intervals; pedicels and fruit rough-puberulent. 



11. A. Roseana. 

 Oil-tubes in pairs in the lateral intervals; pedicels and fruit hispid. 



12. A. Wheeleri. 

 Oil-tubes many, continuous around the seeds; rays of the umbels widely spreading. 



13. A. ampla. 



36. PASTINACA L. Parsnip. i. P. saliva. 



37. HERACLEUM L. Cow Parsnip, Cow Cabbage. l. H. lanatum. 



38. SPHENOSCIADIUM A. Gray. i. S. capitellatum. 



39. CONIOSELINUM Fisch. Hemlock-Parsley. 



Fruit fuUv 6 mm. long; oil-tubes 1 or 2 in each interval. 1. C. scopulorum. 



Fruit about 5 mm. long; oil-tubes 2-5 in each interval. 2. C. coloradense. 



40. OXYPOLIS Raf. l. O. Fendleri. 



Family 94. ARALIACEAE. Ginseng Family. 



Petals imbricate; drupe 5-celled; leaves pinnately or ternately compound; ours unarmed 

 herbs. 1- Aralia. 



Petals valvate in the buds; drupe 2- or 3-celled; leaves simple, palmately lobed; prickly 

 shrubs. 2. Echinopanax. 



1. ARALIA (Tourn.) L. Sarsaparilla, Spikenard, Wild Ginseng. 



1. A. nudicauUs. 



2. ECHINOPANAX Dec. & Planch. Devil's Club, Devil's Walking-stick. 



1. E. horridum. 



F.\mily 95. CORNACEAE. Dogwood Family. 



Flowers dioecious; stigmas lateral; staminate flowers in ament-like spikes. 



1. Garrya. 

 Flowers perfect, cymose or umbellate; stigmas terminal. 



Flowers in open cymes, not subtended by an involucre; shrubs. 



2. SVIDA. 



Flowers in head-like umbels, subtended by an involucre of 4 wliite leaves; herbs with 

 rootstocks. 3. ChaiMaepericlimenum. 



1. GARRYA A. Gray. l. G. flavesccns. 



2. SVIDA Opiz. Cornel, Dogwood, Kinnikinnik. 



Young branches and inflorescence villous. 



Leaves broadly oval or ovate, the larger obtuse at the base, densely villous beneath; 

 inflorescence long-villous; stone usually broader than long. 1. S. pubesccns. 



