i32 AMERICAN MIDLAND NATURALIST 



Ochreolae narrowly funnel form, rose-purple at the apex, glabrous, 

 scarcely lubricate even when the flowers are in bud. Pedicels 

 about 5 mm. long slender in flower. Calyx glandular punctate, 

 white above greenish below and attenuate at the base, 2 mm. 

 long in flower and about 3 mm. in fruit, segments ovate to obovate. 

 Stamens 5 included, style 2-cleft to a little below the middle. 

 Fruit trigonous 2 mm. long, black and lustrous. 



Planta glabra cum foliis ovalibus, ovatis, vel ellipticis. Folia 

 basi cuneato, apice rotundato, obtuso vel in foliis junioribus, 

 apice acutiusculo, 2.7x4.5 cm. vel 3x6.5 magnitudine. Folia in 

 facie superiore viridia, inferiore quidem cinereo-puncticulata, 

 petiolis .6-1 cm. longis, ochreis membranosis, glabris, haud ciliatis. 

 Nodi 3-6.5 cm. longi. Pedunculus cum floribus 2.5 -3 cm. et cum 

 fructu 6.5-7 cm. longus. Ochreolae infundibuliformes roseo colore 

 glabrae mininie imbricatae. Pedicelli circa 5 mm. longi. Calix 

 glanduloso-punticulatus, viridescens, circa 2 mm. longus, ejus 

 partes ovatae vel oboyatae. Stamina 5. Stylus infra medium 

 divisus et fructus ater triangularis, 2 mm. longus. 



Type of description No. 316887, U. S. National Museum 

 Herbarium, Pringle's No. 6656, labelled Polygonum acre collected 

 in Tacubaya Federal District, Mexico, July 26, 1897. The plant 

 differs from P. punctata var. eciliata Small in the shape of the 

 leaves. The racemes are shorter, and the style not cleft to the 

 base. The leaves are all nearly of uniform size. 



Chamaencrion latifolitim var. megalobum Nwd., nov. var. 



Plant rather larger than the type over 3.5 dm.; stem erect 

 or somewhat assurgent, glabrate or sparsely puberulent above. 

 Leaves 2.5-6 cm. or more in length and 7-13 mm. or more wide, 

 glabrous on the surface and minutely and sparsely pubescent 

 below slightly cinereous when young, oblong to oblong-lanceolate, 

 obtuse, cuneate, short pctiolate or subsessile, sometimes opposite 

 at the middle of the stem or above. Sepals oblong lanceolate 

 downy without. Petals obovate apparently whitish or pale, 

 narrowed to a claw. Peduncle 2.5-5 t"m. long in fruit, capsules 

 curved outward in flower by an abrupt twist at the base. Fruiting 

 capsules straight, truncate at the apex and appearing as if some- 

 what beaked, gradually tapering at the base, very long, often over 

 10 cm. Coma of the seeds 1.2 cm. long, pods whitish pubescent 

 especially when young. 



