64 ELEMENTS OF BOTANY. 



black, smooth and shining. ]May-September. Margins of fields and 

 thickets. 



6. P. HiRSUTUM Walt. Hairy Smartweed. Perennial; stems 

 erect, branching, hirsute with spreading hairs, 2-3 ft. tall ; leaves 

 lanceolate, rounded at the base, hairy, especially on the margins and 

 veins, nearly sessile ; ochre?e hirsute, margin with a fringe of long 

 hairs ; flowering spike linear, erect, rather closely flowered ; calyx 

 white ; stamens 8 ; achene o-angied. June- August. Common about 

 ponds in pine barrens. 



III. BRUNNICHIA. 



Perennial ; stem smooth, climbing by tendrils at the ends 

 of the branches ; leaves alternate, entire, petioled ; ochrea3 

 small or wanting ; flowers greenish, in axillary and terminal 

 racemes, on slender pedicels ; calyx 5-parted, loecoming much 

 enlarged, and almost w^oody in fruit ; stamens usually 8 ; 

 styles 3 ; mature achene 3-angied, enclosed by the persistent 

 calyx. 



B. ciRRHOSA Banks. Bruxxichia. Stem somewhat woody, 

 climbing 15-20 ft.; leaves ovate or cordate, slightly pubescent 

 beneath ; sheaths obsolete ; racemes drooping, 2-6 in. long ; flowers 

 in clusters of 2-5, pedicels recurved ; mature fruit coriaceous, 1 in. 

 or more in length. April-May. River banks. 



32. CHENOPODIACEiE. GOOSEFOOT FAMILY. 



Annual, or perennial by a slightly woody rootstock ; leaves 

 simple, alternate or opposite, exstipulate ; flowers perfect, 

 polygamous, monoecious or dioecious, small, greenish, some- 

 times irregular, occasionally solitary in the axils but usually 

 in panicled spikes ; calyx 2-5-lobed or sometimes a single 

 sepal ; petals none ; stamens as many as the lobes of the 

 calyx and opposite them, or sometimes fewer ; ovary free 

 from the calyx, 1-celled, styles 1-3 ; fruit a utricle. A family 

 containing many common weeds, some of which are inimi- 



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