922 TETRANDRIA— MONOGYNIA. Parietaria. 



Perennial. June, July. 



Root creeping, branched, slender. Stems herbaceous, 4 — 6 inches 



high, erect, leafy, with 2 short branches, subsequently extended, 



between which stands the solitary little umbel of dark purple 

 Jtowers, subtended by 4 unequal, white hwolucral leaves, tinged 



with red, and finally turning green. Drupa red, sweetish. Nut 



nearly globular, pointed. 



77. PARIETARIA. Wall-pellitory. 



Linyi. Gen. 54i. Juss. 404. Fl. Br. 189. Tourn.t. 289. Lam. t. 853. 

 GiETtn. f. 119. 



Nat. Ord. ScabridcE. Linn. 53. Urticcc. Juss. 98. 



Lwolucrum various, 1- or S-flowered, regular or irregular. 

 Cal. inferior, of 1 leaf, in 4 deep segments, permanent ; 

 enlarged and hardened after flowering, except in flowers 

 that want stamens. Cor. none. Filam. recurved, linear, 

 wrinkled, elastic when disturbed. Anth. of 2 distant round 

 lobes. Germ, ovate. Style cylindrical, erect. Stigma tufted. 

 Seed ovate, flattened, polished, invested with the enlarged 

 calyx. 



Roughish, branched, leafy herhs^ with alternate, stalked, 

 perhaps always entire, leaves. Fl. small, reddish, various 

 in the different species, some wanting the style, others the 

 stamens. 



1. P. officinalis. Common Wall-pellitory. 



Leaves lanceolate-ovate, without lateral ribs at the base. In- 

 volucrum three-flowered, with seven ovate segments. Stem 

 ascending. 



P. officinalis. Liw«. % PZ. 1492. W\lld.v.4.95?,. Fl. Br. 189. 



Engl. Bot. V. 13. t. 879. Curt. Loyid.fasc. 4. t. 63. Hook. Scot. 56. 



Bull. Fr. t. 199. Fl. Dan. t. 521. 

 P. n. 1612. Hall. Hist. v. 2. 285. 



Parietaria. Rail Syn. 1 58. Ger. Em. 33 1 ./. Brunf. Herb. v. 2.19./. 

 Helxine. Matth. Falgr. v. 2. 457./. Camer. Epit.Sid.f. Lob. Jc. 



v.].258.f. 



On old walls and rubbish, in sheltered places. , 



Perennial, June — September. 



Root rather woody. Stems annual, branched, quadrangular, hairy, 

 reddish, succulent, very impatient of frost j clothed with nume- 

 rous, alternate, stalked, elliptic-lanceolate, acute leaves, of a dull 

 green, a little hairy 5 paler beneath. F/. numerous, axillary, 

 small. Involucrum stalked, in 7 deep, equal, hairy segments, 

 containing 3 Jtowers, of wliich the lateral ones are perfect, and 



