ADDENDA TO THE 



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



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



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



10. GELSEMIUM. Corolla yellow : style slender : stigmas 2, each 2-parted. Pod fla 



several-seeded. Seeds winged. Leaves ovate or lanceolate : stipules obsolete. See p. 29 



P. 174. 9. POLYPREUHJUI, L. POLYPREMUM. 



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

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

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

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

 tened, notched at the apex, loculicidally 2-valved, many-seeded. A smoot 

 diffuse, much-branched, small annual, with narrowly linear or awl-shaped leave 

 connected at their base across the stem by a slight stipular line; the sni 

 flowers solitary and sessile in the forks and at the ends of the branches ; corol 

 inconspicuous, white. (Name altered from TroXwpe/ii/os, many-stemmed.) 



1. P. procumbens, L. Dry fields, mostly in sandy soil, Virginia ar 

 southward. June - Sept. 



P. 196. 



30*. Aster amethystimiS, Nutt. Differs from A. oblongifolius in i 

 more upright growth, more hirsute and cinereous pubescence (that of the ste 

 widely spreading), which is not at all glandular or viscid, more racemose hea 

 of smaller size, the scales of the involucre erect or less spreading, the rays of 

 light clear blue. E. Massachusetts, Dr. Robbins, W. Boott ; and meadows ne 

 Amherst, Prof. Tuckerman. Athens, Illinois, Mr. E. Hall. 



P. 200. 



3. Boltonia diflfusa, L'Her. Stem diffusely branched ; leaves lane 

 linear, those on the branchlets very small and awl-shaped ; heads panicled, ve 

 small ; pappus of several very short bristles and 2 short awns. Prairies ne 

 Centralia, Illinois, Vasey. Common south westward. 



P 205. 



27*. SolidagO Riidllla, Nutt Stem and oblong or obovate-spatula 

 leaves rigid and very rough, not hoary, the upper sessile ; scales of the involuc 

 oblong, rigid ; rays 3 - 6 : otherwise much as in S. nemoralis, of which it is pro 

 ably a greener and rough variety. Dry Hills, W. Illinois and south westward 



P. 227. 



3 tt . Artemisia dracimculoides, Pursh. a perennial species, coi 

 mon west of the Mississippi, with leaves linear and entire, or the lower 3-cle 

 cinereous or nearly glabrous, and small panicled heads has been found in 

 W. Illinois by Dr. Vasey. 



7 a . A. frigida, L., of the third section (p. 228), a low species, slight 

 woody at the base, white all over with a soft silky wool, the leaves pinnate 

 parted, their divisions 3-5-cleft and linear, was found at the Falls of St. A 

 thony by L. Lrsquereux and T. J. Hale. It is common thence northwestward. 



