1118 ADDITIONS AND CORRECTIONS 



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j.;ti 2a. P. mesochora Greene. TERRESTRIAL FORM: Stem decumbent 

 :it the base, moling. 12 --"> dm. high, glabrous or sparingly appressed-hirsute; 

 (tclii-cMc more or less appressed-pubescent or the lower glabrous, rarely 

 with :i r)li;ic('ous border; petioles 1-2 cm. long, usually more or less his- 

 pidiiloiis; leaf-blades linear-lanceolate or rarely lanceolate, 7-15 cm. long, 

 l.,~> ;; cm. wide, gradually tapering towards the apex, sparingly short- 

 pubescentj or glabrous except on the midrib and the hispidulous-ciliolate 

 ma ruins; peduncles 3-5 cm. long, usually hispidulous; racemes 3-5 cm. 

 long, about 1 cm. thick; bracts hirsute. P. mesochora Nieuwl. PALUDOSE 

 I-'.)I;.M: Like the terrestial, but glabrous, sometimes even to the peduncles 

 and 1 tracts. AQUATIC FORM: Stem floating and rooting at the nodes, 

 1-2 in. long, glabrous; petioles 3-5 cm. long, glabrous; leaf-blades lanceolate 

 or ovate-lanceolate, acute at the apex, truncate or cordate at the base, 

 5-12 cm. long, 2.5-4 cm. wide, glabrous; inflorescence as in the terrestrial 

 form, but the peduncles usually glabrous and the bracts always glabrous 

 less common than the terrestrial). P. mesochora Greene (as to type). 

 \Yater and wet places: Me. Minn.- w. Neb. D. C. 



3. P. coccinea (Muhl.) Greene. TERRESTRIAL FORM: Stem erect, 3-10 

 dm. high, striate, glabrous or somewhat hispidulous ; ochreae short, truncate, 

 short-hispidulous; leaf -blades ovate or ovate-lanceolate, 1-2 dm. long, 

 4-6 cm. wide, abruptly acuminate at the apex, acute to subcordate at 

 the base, sparingly short-hispidulous or nearly glabrous, except the his- 

 pidulous margins and veins; peduncles 1 or 2, glandular-hirsutulous, 

 2-5 cm. long; raceme linear, 5-8 cm. long, usually tapering upwards; 

 bracts glandular-hispidulous at the base and hispidulous-ciliate on the 

 margins, otherwise glabrous (common). Polygonum coccineum terrestre 

 Muhl. P. amphibium emersum Michx. P. Muhlenbergii S. Wats. PALUDOSE 

 FORM: Resembling the terrestrial, especially above, but often glabrous 

 up to the inflorescence, the bract glabrous, and the lower leaves like 

 those of the aquatic form. AQUATIC FORM: Stem floating and rooting, 

 1-3 m. long, glabrous, the nodes somewhat thickened; ochreae glabrous, 

 truncate; petioles 5-7 cm. long, glabrous; leaf-blades ovate or ovate- 

 lanceolate, acute at the apex, usually cordate at the base, 5-12 cm. long, 

 2-5 cm. wide, glabrous; inflorescence like that of the terrestrial form, 

 but the peduncles sparingly glandular or glabrous and the bracts glabrous 

 (rare). Polygonum coccineum aquaticum Muhl. Water and wet places: 

 -Man. (?) Iowa Mo. Va.; Utah. 



3a. P. pratincola Greene. TERRESTRIAL FORM: Stem decumbent at 

 ihe base, 3-10 dm. high, thickened at the nodes, usually more or less 

 appressed-pubescent; sheaths truncate, appressed-hirsute; petioles 3-5 cm. 

 long, more or less hispidulous; leaf -blades ovate or ovate-lanceolate, ab- 

 ruptly acuminate at the apex, acute to subcordate at the base, equally 

 appressed-hirsutulous on both sides, 8-15 cm. long, 3-5.5 cm. wide; ped- 

 uncles 1 or 2 (rarely 3 or 4), glandular-hispidulous; raceme 4-10 cm. long, 

 1 cm. thick or less; bracts hirsute throughout (common). P. pratincola 

 ('.reene. P. spsctdbilis, P. propinqua and P. Wardii Greene. P. rigidula 

 \icuwl., not (Sheld.) Greene. PALUDOSE FORM: like the terrestrial but 

 glabrous or nearly so, the bracts only sometimes sparingly hirsute. 

 .\<>r vric FORM: Unknown, unless represented by P. subcoriacea Greene. 

 \\ "ct places and shallow water: Sask. Wash. Ore. Utah Mo. Jl-O. 



P. vestita Greene. TERRESTRIAL AND PALUDOSE FORMS: Stem de- 

 cumbent and rooting at the base, glabrous, 5-10 elm. high; lower ochreae 

 "ii the part of the stem submerged or at some time having been sub- 

 glabrous, the upper ones appressed-hirsute; petioles 1.5-4 cm. 

 long, usually more or less appressed-hirsutulous; leaf -blades ovate or 

 ovate-lanceolate, abruptly acuminate at the apex, acute or rounded, or 

 the lower cordate at the base, appressed-hirsutulous above, more densly 

 pubescent with finer hairs, almost silky "canescent beneath, or the lower 

 a growing in water glabrous; peduncles 2-4 cm. long, glanclular-his- 



