APPENDIX. IO73 



veined beneath: peduncles short, 2-8 mm. long, mostly not longer than 

 the diameter of the globose fruit. In rocky places, Pcnn. to Fla., Mo. 

 and Ala. April. 



P. 339, after Celtis Mississippiensis, add: 



4. Celtis reticulata Torr. Net-veined Hackberry. A small tree. 

 Leaves thick and coriaceous, strongly reticulate-veined beneath, the 

 veins impressed in the upper surface; blades 7 cm. long or less, bright 

 green, and either very rough or nearly smooth, above, ovate, acute, serrate 

 or entire; drupe red, globular, 8-12 mm. in diameter. Along streams, 

 Kans. to Texas, Colo, and Cal. 



P. 341, after Humulus Lupulus, add: 



ia. Humulus Japonicus Sieb. & Zucc. Japanese Hop. A twining 

 vine, similar to the Common Hop, the leaves deeply pedately 5-7-cleft. 

 Pistillate aments few-flowered, their bracts and bractlets deltoid, acu- 

 minate, hispid-pubescent at least on the margins, not glandular. In waste 

 ground, Conn, to D.C. Introduced from Japan. Aug.-Sept. 



P. 364, after Polygonum Rayi, insert: 



24a. Polygonum Fowled Robinson. Fowler's Knotweed. Similar 

 to P. Rayi in habit, but pale green. Leaves elliptic or oblong, often 

 narrowly so, 1.5-3 cm. long, mostly obtuse; flowers solitary or 2 together; 

 calyx deeply 5-parted, whitish or reddish, the lobes oblong; achene 

 narrowly ovoid, 4 mm. long, the narrow tip exserted. Differs from 

 P. Rayi chiefly in the more obtuse leaves, which do not become black in 

 drying, the oblong calyx-lobes, and the smaller, more gradually narrowed 

 achene. Sandy shores. N. B., Anticosti and Me. Aug. and Sept. 



P. 364, after Polygonum exsertum, insert: 



26a. Polygonum leptocarpum Robinson. Narrow-fruited Knot- 

 weed. Resembling P. ramossissimum prolificum in habit but more 

 slender; stem about 3 dm. tall, profusely branched, the branchlets 

 angled. Leaves linear or linear-lanceolate, at least mainly so, pale green, 

 the upper ones 6-8 mm. long; ocreae 3 mm. long or longer on the lower 

 part of the stem; calyx 2 mm. long, 4-5-lobed, the lobes oblong, rounded 

 at the apex, the margins pale or sometimes reddish; stamens 4 or 5; 

 achene 3-angled, lanceolate in outline, about 2.8 mm. long, brownish, 

 nearly or quite tw r ice as long as the calyx. Kans. Sept. and Oct. 



P. 369, after Chenopodium glaucum, insert: 



2a. Chenopodium vulvaria L. Stinkin'g Goosefoot. Annual, much- 

 branched, white-mealy, the branches procumbent, 3 dm. long, or more; 

 leaves ovate, entire, 2.5 cm. long, or less, the slender petioles about as long 

 as the blades; flowers in dense short axillary and terminal branched or 

 simple spikes mostly shorter than the leaves; sepals ovate-lanceolate, 

 obtusish. In waste places and ballast, Ont. to Del. July-Sept. 



P. 383, before Allionia Bddini, insert: 



4a. Allionia bracteata Rydb. Bracted Umbrella-wort Stems 

 12 dm. high or less, glabrous below, viscid-pubescent above, erect or 

 ascending. Leaves of the stem linear to linear-oblong or linear-lanceo- 

 late. 3-9 cm. long, those of the branchlets small, less than 1 cm. long, 

 viscid-pubescent; inflorescence of numerous panicled involucres; invo- 

 lucres 10-14 mm. wide, their lobes obtuse; perianth white or pale, 

 about 10 mm. broad; fruit oblong-obovate, about 5 mm. long, 8-ribbed, 

 apiculate, constricted near the base. In dry soil, Mo. July-Aug. 



