1086 APPENDIX. 



P. 743, after Asclepias Syriaca, insert: 



15a. Asclepias Kansana Vail, n. sp. Kansas Milkweed. Stems 

 erect, stout, canescently-tomentose, 2 dm. high or more. Leaves short- 

 petioled, the basal ones broadly oblong-ovate, truncate and rounded at 

 the base, obtuse and mucronulatc or emarginate at the apex, the upper 

 ones elliptical-oblong, the lower ones 13-16 cm. long; minutely tomentose 

 or becoming glabrate above, densely canescently-tomentose beneath, 

 the midvein very broad and conspicuous, the primary veins wide-spread- 

 ing; umbels seve al, axillary, peduncled, many-flowered; peduncle 

 3-7 cm. long; pedicles 2-3 cm. long, tomentose; corolla-segments 

 oblong, 7-8 mm. long, tomentose outside; hoods oblong, about 4 mm. 

 long, diverging at the obtu e apex, the lateral margins infolded with a 

 broad obtuse tooth on each side at about the middle, the tips of which 

 meet under the exserted incurving horn horn falcate, affixed near the 

 base of the hood, and incu vmg over the edge of the anthers; follicles 

 erect, on recurved pedicels, 8-10 cm. long, 3-3.5 cm. wide, obtuse, 

 densely white- tomentose, echinate with numerous soft spinose processes 

 that vary in 1 ngth from 3-10 mm.; seeds 8 mm. long. Kansas. Type 

 from Fort Riley. 



P. 749, at end of Asclepiadaceae, add: 



7. PERIPLOCA L. 



Woody twining plants with entire opposite leaves and middle-sized 

 flowers in umbels. Calyx 5-parted, glandular within; corolla deeply 5- 

 parted, the segments obtuse, dextrorsely rotate, villous on the inner sur- 

 face; corona adnate to the base of the corolla, with 10 broad or 5 slender 

 elongated, entire or lobed scales or appendages; filaments short, free, 

 conniving at the short appendiculate apex; pollen granulose, loosely 

 aggregated in two masses in each anther-cell; follicles slender, glabrous, 

 generally united at the apex; seeds comose. (Greek, twining.) 



1. Periploca Graeca L. Glabrous; leaves ovate-oblong, acute, paler be- 

 neath; umbels cymose; peduncles shorter than the leaves; corolla-seg- 

 ments dull brownish or greenish, with a darker line down the middle and 

 a whitish spot at the base within; appendages of the corona slender, ligu- 

 late, 2-toothed at the apex. A handsome woody climber of the Old 

 World, escaped from cultivation, Mass. to Kans. Native of Syria and 

 the Grecian Islands. Called Silk Vine. 



P. 753, after Convolvulus sepium, insert: 



1. Convolvulus fraternifldrus Mackenzie and Bush. Two-flowered 

 Bindweed. Stem 1 m. long or more, glabrous or sparingly hairy. 

 Leaves hastate. 6-10 cm. long, dark green, rather thick, finely pubes- 

 cent on both sides, the basal auricles divergent, entire or with one or 

 two teeth; axils or most of them two-flowered, the peduncle of one of 

 the flowers longer than the petiole, the other shorter; bracts 2.5-3 cm. 

 long; corolla 6 or 7 cm. long, white. Prairies, Mo. July-Aug. 



P. 763, after Hydrophyllum Virginicum, insert: 



ia. Hydrophyllum patens Britton. Purple Water-leaf. Similar 

 to H. Virginicum in habit and foliage, the petioles more strongly ciliate. 

 Calyx-segments at flowering time appressed to the corolla (spreading 

 in H. Virginicum); corolla purple, its segments with spreading tips 

 (erect in //. Virginicum). Minn June. 



P 775, after Onosmodium m611e, insert: 



2a. Onosmodium subset6sum Mackenzie & Bush. Smoothish 

 FALSE GroMWELL. Leaves, branches, and upper part of the stem 

 appressed-strigosc, the lower part of the stem smooth or with scattered 



