SPRING FLORA 



1. OS31ORRHIZA. (Washingtonia.) Sweet Cicely. 



Perennial from thick aromatic roots. Stem slender, branch- 

 ing. Leaves few; 2-3 times compounded in threes. Umbel 

 compound, few-flowered; with small involucre and involucels 

 or none. Flowers small; white, on long pedicels. Calyx-teeth 

 none. Stylopodium small, conical. Fruit fusiform or cylin- 

 drical, with 5 equal and bristly or glabrous ribs (without 

 wings). Oil-tubes none (at least in mature fruit). 



Fruit with bristly ribs 1. O. divaricata 



Fruit glabrous -. . 2. O. occidental!* 



1. O. tlivaricata Nutt. ( Washingtonia divaricata Britton; W. 

 intermedia Rydb.) Nearly glabrous; 12-30 inches high. Leaf- 

 lets thin; lanceolate or ovate; acute or acuminate and coarsely 

 toothed. Umbels simple, of 2-9 spreading rays; and white 

 flowers on pedicels usually about as long as the fruit; in- 

 volucres none. Fruit with a distinct, sharp beak. In rich 

 soil in shady places along streams. May-June. 



2. O. occidental^ Nutt. (W. occidentalis (Nutt.) Coult. & 

 Rose; Glycosma occidentalis Nutt.) Rather stout; puberulent 

 or glabrous; 1-2 ft. high or even more. Leaves ternate; leaflets 

 lanceolate-oblong; rather thick; acute; coarsely serrate. Umbel 

 5-12-rayed, without involucre or involucels (or rarely witli 

 1-2 involucral bracts). Fruiting rays usually erect and form- 

 ing a compact cluster of fruits. Flowers white or greenish. 

 Fruit distinctly beaked; obtuse (not tapering) at base; gla- 

 brous. June-July. 



2. L.EPTOTAENIA. (Ferula). "Wild Carrot." 



Nearly stemless smooth perennials. Leaves very large; 

 pinnately decompound. Peduncles tall and stout. Involucre 

 none or of a few bracts; involucels of many small bractlets. 

 Flowers yellow or purple, in many-rayed umbels. Calyx-teeth 

 none. Disk small; stylopodium depressed. Fruit flattened; 

 elliptical or nearly round; strongly compressed dorsally with 

 corky lateral wings as thick as the fruit. Oil-tubes 1-6, but 

 obscure; or sometimes wanting. 



1. L,. multifida Nutt. (Ferula multifida A. Gray.) Leaves 

 puberulent, finely dissected into linear divisions. Flowers 

 yellow (or purplish). Fruit pedicelled, usually without oil- 

 tubes. Seed-face concave. Dry plains or hillsides, often in 

 oak copses. May-June. Often called "Wild Parsnip." 



la. L,. multifida Eatoui (C. & R.) Jones. (L. Eatoni C. & R.) 

 Leaves dissected into oblong divisions. Fruit usually with oil- 

 tubes. Seed-face plane. Same habitat and time of flowering 

 as the type. 



3. PASTIIVACA. Parsnip. 



Erect branching biennials from thick roots. Leaves once- 

 pinnate. Umbels compound, usually without either involucre 

 or involucels. Flowers yellow. Calyx-teeth wanting. Stylo- 

 podium depressed. Fruit oval; smooth, much flattened dorsally. 

 Oil-tubes solitary in the intervals. 



1. P. sativa L. Stem 2-5 ft. high from a long, conical root. 

 Basal and lower stem-leaves petioled, long (often as much as 

 1-1% ft.) Umbels several, 2-6 inches broad. Pedicels very 

 slender. In waste ground. June-Sept. 



