Vol. III.] 



VALERIAN FAMILY. 



247 



5. Valerianella Woodsiana (T. & G.) Walp. Woods' Corn Salad. 

 (Fig. 3479.) 



Fedia Woodsiana T. & G. Fl. N. A. 2: 52. 1S41. 

 Valerianella Woodsiana Walp. Rep. 2: 527. 1S43. 



Usually larger tban any of the precediug 

 species, sometimes 3° bigb, glabrous or very 

 nearly so tbroughout. Basal and lower leaves 

 spatulate, obtuse, entire; upper leaves lanceo- 

 late or linear-oblong, usually dentate; cymes 

 3"-6" broad, few-flowered; bracts compara- 

 tive!}' large, lanceolate; corolla white, about 

 \" long; fruit glabrous, nearly globular, about 

 \" in diameter, the empty cavities inflated, in- 

 trorse with a depression or concavity between 

 them, as broad as the fertile one. 



In moist soil. New York, Pennsylvania and 

 Ohio to Tennessee and Texas. May-July. 

 Valerianella Woodsiana umbilicata (Sulliv. ) 

 A. Gray, Proc. Am. Acad. 19: 82. 1883. 

 F.umbilicala Sulliv. Am, Joum. Sci.42: 50. 1842. 



Empty cells of the fruit bladderj'-inflated, 

 curved together at the ends, forming a deep con- 

 cavitj-. Same range. 



Valerianella Woodsiana patellaria (Sulliv.) A. Gray, Proc. Am. Acad. 19: 82. 1883. 

 Fedia patellaria Sulliv.; A. Gray, Man. 183. 1S48. 



Empty cells divergent, the fruit becoming saucer-shaped. Ohio and Pennsylvania, 

 variety and the preceding one are probably but forms of the species. 



This 



6. Valerianella longiflora (T.&G.) 



Walp. Long-flowered Corn Salad. 



(Fig. 3480.) 



Fedia longiflora T. & G. Fl. N. A. 2: 51. 1841. 

 Valerianella longiflora Walp. Rep. 2: 527. 1843 



Glabrous; stem usually several times 

 forked, 6'-i2' high. Leaves very obtuse, 

 the basal ones spatulate, i'-2>^' long, i,"-Z" 

 wide, those of the stem oblong or spatulate- 

 oblong, smaller, somewhat clasping; cymes 

 dense, corymbed, commonly numerous, sev- 

 eral-many-flowered; corolla salverform, pink 

 or purplish, about 6" long, the almost fili- 

 form tube 3-4 times as long as the somewhat 

 irregular 5-parted limb, the lobes linear-ob- 

 long; bracts with small gland-tipped teeth; 

 fruit broadly ovate or nearly orbicular in out- 

 line, the empty cavities divergent, larger 

 than the oblong seed-bearing one. 



In moist rocky situations, Missouri and Ar- 

 kansas. April-May. 



Family 38. DIPSACACEAE Lindl. Veg. Kingd. 699. 1847. 



Teasel Family. 



Perennial biennial or annual herbs, with opposite or rarely verticillate leaves, 

 and perfect gamopetalous flowers in dense involucrate heads. Stipules none. 

 Flowers borne on an elongated or globose receptacle, bracted and involucellate. 

 Calyx-tube adnate to the ovary, its limb cup-shaped, disk-shaped, or divided 

 into spreading bristles. Corolla epigynous, the tube usually enlarged at the 

 throat, the limb 2-5-lobed. Stamens 2-4, inserted on the tube of the corolla 

 and alternate with its lobes ; filaments distinct ; anthers versatile, longitudin- 

 ally dehiscent. Ovary inferior, i-celled, style filiform; stigma undivided, 

 terminal, or oblique and lateral; ovule i, anatropous. Fruit an achene, its apex 

 crowned with the persistent calyx-lobes. Seed-coat membranous; endosperm 

 fle.shy; embryo straight. 



About 7 genera and 140 species, natives of the Old World. 

 Scales of the elongated receptacle prickly pointed. i. Difisacus. 



Scales of the receptacle not prickly, herbaceous, capillary, or none. 2. Scabiosa. 



I. DIPSACUS L. Sp. PI. 97. 1753. 

 Rough-hairy or prickly tall erect biennial or perennial herbs, with opposite dentate en- 

 tire or pinnatifid, usually large leaves, and blue or lilac flowers in dense terminal peduncled 



