34.8 The Flora of Wiltshire. 



1. C. verna, (Linu.) vernal Water Starwort. Engl. Bot. t. 722. 

 Locality. In ponds and slow streams. A. or B. Fl. April, Sep- 

 tember. Area, 1. 2. 3. 4. 5. 



Observed in all the Bidricts. This varies much, as do most all 

 aquatic plants in its foliage. Upper and floating leaves generally 

 oval and stalked, 2-ribbed ; lower ones single-ribbed, linear. Fruit 

 small; keels of each pair of lobes converging. In muddy places, 

 where the water is nearly dried up, there are no submerged or 

 linear leaves, all being oval or obovate. 



2. 0.^;^fl(yca?7Ja, broad-fruited "Water Starwort, /j?a^?(5 signifying 

 broad, and carpos fruit. Bngl. Bot. Si/ppl. t. 2864. B. v. 129. 



Ijocality. In ditches, ponds, and on mud. A. or P. Fl. May, 

 September. Area, 1. 2. 3. 4. 5. 



Bistributed throughout all the Bistricts. Yery similar to C. 

 verna, but with the fruit nearly twice as large, and considerably 

 broader in proportion. When the plant grows out of the water 

 the leaves are frequently all obovate, but smaller than when they 

 are floating. 



ORDER. URTICACE^. (JUSS.) 



Parietaria, (Linn.) Wall Pellitory. 



Linn. CI. iv. Ord. i. 



Named from paries, a wall ; the species frequently growing on 

 old walls. 



1. P. officinalis, (Linn.) common Wall Pelitory. Engl. Bot. t. 

 879. P. diffusa, Koch. P. ramijlora. Moench. 



Locality. Old walls and waste places among rubbish. P. Fl. 

 July, September. Area, 1. 2. 3. 4. 5. 



Bistributed throughout all the districts, hut not common. Stem 

 prostrate or ascending, simple or branched below. Leaves stalked, 

 varying from ovate to oblong, quite entire. Floicers in sessile 

 clusters, purplish in the axils of the leaves ; the involucre very 

 small, consisting of 2 or 3 divided bracts. For a curious and 

 interesting account of the mode of fructification in Parietaria see 

 Baxter's Gen. of Br. Flow. Plants, Yol. iii., No. 224. 



