55 



pecially prostrate, six to ten inches long, and half as wide, 

 oblong, frequently red-veined, blunt wavy-edged. Flower 

 stalks leafy, branched, with distant whorls, the petals veined. 

 Flowers green, quarter of an inch long. Common everywhere. 

 Perennial. January to March. 



Rumex Sanguineus. Linn. Closely resembling in growth 

 the former but always with blood-red veins in leaves. Pere- 

 nnial. Common. 



Rumex Crispus. Linn, (curly dock. ) Stem erect, furrow- 

 ed, two to three feet high. Leaves oblong, six to ten inches 

 long, two inches wide, very waved on margins presenting a 

 crisp appearance. In other respects and in locality, the same 

 as preceding species. 



Naural Order, Ceratophylleae. 



Ceratophyllum Deniersum. Linn, (pond-weed, water 

 hyacinth?) A plant of peculiar growth, stemless, but putting 

 up numerous fleshy, dark-green, shining leaves two to three 

 inches long, and nearly as wide supported on strong stalks two 

 to three inches long, tumid and excessively swollen, composed 

 of a pulpy, fibrous growth, roots floating or skirting the mud. 

 Flowers, abundant on stalk three or four inches long, mauve- 

 pink, very similar to the Colichum. Pembroke marsh. Pere- 

 nnial. August. 



This plant was introduced from Florida. It has now so spread 

 as to block the water channels in Pembroke marsh, necessita- 

 ting an annual raking out and destruction of the plants. 

 Natural Order, Aristolochiaceae. 



Aristolochia Trilobata. Linn. ( Dutchman's pipe, birth- 

 wort. ) A creeping plant, extending many feet with long 

 slender runners, covering walls or fences. Leaves heart-shaped 

 slightly fleshy, light-green, delicately veined underneath, 

 pointed, three to four inches long, two inches wide, narrowing 

 to a point. Flowers pendulous from leaf axil on a stalk two 

 to three inches long; expanding and opening upwards from 

 the stalk end; brown and white mottled. The form of the 

 flower corresponds to that of a pipe. Seed-pod like an invert- 

 ed parachute. Originally a garden plant, it is now compara- 

 tively abundant on old walls. Perennial. Summer. 



