HOSACEiE. 311 



Roots thick, tufted. Stems erect, round, tapering, simple or 

 branching above, hairy. Leaves interruptedly pinnate, with an 

 odd leaflet ; leaflets ovate-oblong, deeply-toothed, intermediate 

 and smaller leaflets entire or incised, all pubescent below; pe- 

 tioles and midribs furnished with longer reddish hairs. Stipules 

 leaf-like, clasping, incised or toothed. Calyx usually with one 

 ripe carpel. 



Waysides. Perennial ; . July. 



A. odorata, Thuil. Var. of the preceding (?). — Stems taller 

 than in A. Eupatoria, and branching at the summit, leafy ; calyx 

 of the fruit globular, much larger tJian in the typical form. This 

 enlargement of the calyx is caused by the development of both 

 carpels. 



A. agrimonioides, Linn. Aremonia agrimonioides, DC. Fl. Gr. 

 458. — Stem-leaves ternate; stamens 8 (?); fruit smooth. — This 

 plant has recently been detected in the woods about Scone and 

 in several parts of Perthshire. (John Sim, in ' Phytologist,' n. s. 

 vol. ii. p. 272.) 



Sanguisorba, Linn. Burnet. — Herbaceous plants, with pin- 

 nate leaves, and cut or serrated leaflets, with densely spicate 

 flowers. Perianth four-cleft, coloured, with four scales or bracts 

 at the base, and constricted by an annular disc. Stamens 4. 

 Ovary with four angles. Fruit covered by the hardened calyx- 

 tube, one-celled, indehiscent, one- or two -seeded. 



S. officinalis, Linn. Common Burnet. — e.b. 1312. l.c. 354. 

 A. 14. C. 40. Lat. 50-56°. Alt. 0-200 yds. Tem. 52-47°. 



Root thick, woody. Stems erect, rigid, branching above, an- 

 gular, smooth. Leaves pinnate, 9-15 leaflets; leaflets cordate, 

 lanceolate, serrate, shining above, glaucous below ; stipules leaf- 

 like, toothed. Flowers in dense ovate or obovate-cylindrical 

 heads. Perianth dark-purple ; segments ovate, pointed, keeled. 



Moist upland pastures and meadows. Perennial ; July. 



PoTERiuM, Linn. Salad Burnet. — Herbaceous or slirubby 

 plants. Leaves pinnate, with cleft or serrated leaflets. Flowers 

 in terminal heads or spikes, monoecious ; the upper fertile, the 

 lower barren. Calyx with three sepals. Corolla of the male 

 flowers tubular, with a four-parted limb ; of the female flowers 

 rotate, with a very short tube, constricted at the throat by an an- 

 nular disc and four deep, reflexed, permanent segments. Stamens 

 20-30, with long, flaccid filaments and roundish two-lobed an- 



