BORA GIN A CEA E. 769 



7. Lappula Lappula (L.) Karst. European Stickseed. Burseed. (I. F. 

 i 3021.) Annual, pale, leafy, hispid or appressed-pubescent, 3-6 dm. high, the 

 branches erect. Leaves linear, linear-oblong or the lowest spatulate, sessile or the 

 lower narrowed into petioles, obtuse or obtusish, 1-4 cm. long; racemes more or 

 less I -sided; pedicels short, stout; calyx-segments lanceolate; corolla blue, about 

 2 mm. broad; fruit globose-oval, 3 mm. in diameter, the nutlets papillose on the 

 back, the margins with 2 rows of slender prickles. In waste places, N. S. to Br. 

 Col., N. J. and Kans. Nat. from Europe. May-Sept. 



2. Lappula Texana (Scheele) Britton. Hairy Stickseed. (I. F. f. 

 3022.) Annual, similar to the preceding. Leaves linear or linear-oblong, mostly 

 obtuse, the lower narrowed into petioles; pedicels short, not defiexed in fruit; 

 flowers about 2 mm. broad; nutlets papillose-tuberculate on the back, the margins 

 armed with a row of flat, usually confluent bristles, or these united into a cup. In 

 dry soil, Manitoba and the N. W. Terr, to Br. Col., Neb., Tex. and Ariz. April- 

 Aug. 



3. Lappula Virginiana (L.) Greene. Virginia Stickseed. (I. F. f. 3023.) 

 Biennial, pubescent; stem 6-12 dm. high, the branches spreading. Basal leaves 

 (seldom present at flowering time) ovate to orbicular, cordate, long-petioled; stem 

 leaves ovate-oblong or oval, acute or acuminate, petioled, 0.7-2 dm. long, the upper- 

 most smaller, sessile; racemes slender, divergent; pedicels short, defiexed in fruit; 

 corolla nearly white, about 2 mm. broad; fruit nearly 4 mm. in diameter; nutlets 

 covered on the margins and usually also on the back by the slender flattened barbed 

 prickles, the backs commonly also more or less papillose. In dry woods and thick- 

 ets, N. B. to Ont. and Minn., Ala., La. and Kans. June-Sept. 



4 Lappula floribunda (Lehm.) Greene. Large- flowered Stickseed. (I. F. 

 f. 3024.) Biennial or perennial, rough-pubescent; stem stout, 6-15 dm. high. 

 Leaves oblong to linear-lanceolate, 5-10 cm. long, 4-20 mm. wide, sessile, or the 

 lower narrowed into petioles; racemes erect or nearly so, densely flowered, many 

 of them in pairs; pedicels 4-8 mm. long, deflexed in fruit; flowers blue, 6-10 mm. 

 broad; fruit pyramidal, about 6 mm. broad; nutlets keeled, papillose-tuberculate 

 on the back, the margins armed with a row of flat prickles. Western Ont. and 

 Minn, to Br. Col., N. Mex. and Cal. June- Aug. 



5. Lappula Americana (A. Gray) Rydberg. Nodding Stickseed. (I. F. f. 

 3025.) Annual, rough -puberulent; stem 3-9 dm. high. Leaves oblong or oblong- 

 lanceolate, mostly narrowed at both ends, 5-10 cm. long; racemes slender; pedi- 

 cels slender, 4-8 mm. long, deflexed in fruit; corolla white or bluish, about 2 mm. 

 broad; fruit pyramidal; nutlets keeled, papillose-tuberculate on the back, rarely 

 with a few prickles on the keel, the margins armed with a row of flat prickles. In 

 thickets, Manitoba and N. Dak. to Br. Col. May-Aug. 



4. ALLOCARYA Greene. 



Mostly annual low herbs, with linear entire leaves, the lowest often oppo- 

 site, and small flowers in terminal spikes or racemes. Pedicels thickened at the 

 summit, persistent. Calyx 5 -divided, persistent, the segments narrow. Corolla 

 salverform, white, yellow in the throat. Stamens included. Ovary 4-dividcd; 

 style short. Nutlets crustaceous, attached at their base or below the middle to the 

 receptacle. [Greek, different nuts.] About 25 species, of western N. Am. 



1. Allocarya scopulorum Greene. Mountain Allocarya. (I. F. f. 

 3026.) Pubescent, with scattered stiff appressed hairs, the slender spreading 

 branches 2-20 cm. long. Leaves I— 3.5 cm. long, 2-3 mm. wide, sessile or short- 

 petioled; flowers about 2 mm. broad, distant, borne in most of the axils, short- 

 pedicelled; floral bracts similar to the leaves; calyx-segments linear-lanceolate; 

 nutlets reticulate on the back. Lightly grooved on the ventral side. Western Neb. 

 to Mont., Wyo. and Colo. June-Sept. 



5. CRYPTANTHE Lehm. 



Low annual setose or hispid herbs, with narrow alternate entiie leaves, and 

 small mostly white flowers, in scorpioid spikes. Calyx 5 -parted or 5-cleft, at 

 length deciduous, the lobes or segments erect, mostly connivent in fruit. Corolla 

 small, funnelform, usually with 5 scales closing the throat, the lobes imbricated in 



