XC11 ADDENDA TO THE 



P. 132. 



10. (Enothcra serrulata, Nutt. Stoms low, slightly woody at the 

 base, leaves lance-linear, oblanceolate, or linear-spatulate, sharply serrulate or 

 toothed ; flowers axillary ; tube of the calyx funnel-form, shorter than the ovary, 

 with 4 strong nerves which are continued as keels to the lobes ; petals yellow, 

 obovate, wavy-crenulate, much longer than the stamens ; anthers oblong ; stigma 

 discoid, merely crenulate ; pods cylindrical, puberulent. Falls of St. Anthony, 

 Wisconsin (Lesquereux)^ and westward. 



2. Jussiaea repens, L. Glabrous or nearly so ; stem creeping, or 

 floating and rooting ; leaves oblong, tapering below into a slender petiole ; flow- 

 ers large, long-peduncled ; calyx-lobes and slightly obcordate petals 5 ; pod 

 cylindrical, with a tapering base. 1|. In water, Illinois, Kentucky, and south- 

 ward. 

 P. 136. 



2. Opuntia RliSSOlirieilSiS, DC. Prostrate, with narrow and obo- 

 vate tuberculate joints, the axils bristly and all armed with 5 to 10 slender radi- 

 ating prickles, some of them stronger ; flowers yellow ; berry prickly. Bor- 

 ders of Wisconsin and westward. 



P. 143. 



9. Saxifraga Stcllaris, L. var. coniosa, Willd. Leaves wedge- 

 shaped, more or less toothed ; scape a span high, bearing a small contracted 

 panicle ; many or most of the flowers changed into little tufts of green leaves, 

 the perfect flowers with a free reflexed calyx ; petals unequal, lanceolate, white, 

 with two yellowish spots on the base, which is narrowed into a distinct claw. 

 Mount Katahdin, Maine, Rev. J. Blake. 



P. 156. To Discopleura capillacea add : 



Var. ? COStata. Larger ; rays of the umbel and divisions of the involucre 

 numerous ; ribs of the fruit stronger. S. Illinois, Vasey. 



Helosciadium nodinomin, Koch. A remarkable aquatic form 

 of this European species, or perhaps an allied new species, was discovered in 

 brooks on the Pocono Mountain, Pennsylvania, by Prof. Traill Green. For 

 lack of mature fruit the determination is still uncertain. 



P. 169, after line 13 from bottom, add to the Synopsis : 



9. POLYPREMUM. Corolla (white) and single style very short. Pod ovoid, many-seeded, 



loculicidal. Leaves slightly connected at the base, very narrow. 



10. GELSEMIUM. Corolla large, yellow, style long and slender : stigmas 2, each 2-parted. 

 Pod flat, several-seeded. Seeds winged. Leaves ovate or lanceolate : stipules obsolete. 

 See p. 296. 



P. 174. 9. POL.YPREUIU]JI, L. POLYPREMUM. 



Calyx 4-parted, persistent ; the divisions awl-shaped from a broad scarious- 

 margined base. Corolla not longer than the calyx, almost wheel-shaped, bearded 

 in the throat ; the 4 lobes imbricated in the bud. Stamens 4, very short : anthers 

 globular. Style 1, very short: stigma ovoid, entire. Pod ovoid, a little flat- 



