142 37. tjmbellifeRjE. 



13. BuNiUM Linn. Pig-nut. 



1. B. flexuosum (With.); general involucre of 1 — 3 leaves, 

 partial more numerous, /r. ocaZ narrowing upwards crowned with 

 the elongated stylopode and erect styles, interstices with 3 vittse. 

 — E.B. 988. B.denudatum DC. — Involucres sometimes altogether 

 wanting. Root a solitary tuber. St. a foot or more high, very 

 slender below, bearing a few 1. with linear segments. Radical 1. 

 triternate with long footstalks tapering downwards. — Sandy and 

 gravelly pastures. P. V. VI. 



2. B. Bulbocastanum (L.) ; general and partial involucres of 

 many leaves, fr. oblong crowned with the short stylopode and 

 reflexed styles, interstices with single vittse. — E. B. S. 2862. 

 Carum Koch, DC. — Involucres always present. Lower 1. bipin- 

 nate, with a triangular outline, rather numerous near the base of 

 the stem, rarely 1 or 2 radical upon long footstalks tapering down- 

 wards.— Chalky fields in Camb. and Herts. P. VI. VII. E. 



14. PiMPiNELLA Linn. Burnet-Saxifrage. 



1. P. magna (L.); 1. pinnate, leaflets all ovate serrate some- 

 what cut the terminal one 3-lobed, st. angularly striate. — E. B. 

 408. — St. 1 — 2 feet high, leafy. Lateral leaflets sometimes 

 3-lobed. Styles longer than the ovaiy, as long or longer than 

 the oval fruit.— Shady hills. P. VII. VIII. E. I. 



2. P. Saxifraga (L.) ; 1. pinnate, leaflets of the lower 1. 

 roundish-ovate serrated somewhat cut, those of the stem-l. bipin- 

 natifid with linear segments, st. terete, pad. glabrous. — E. B. 407. 

 — St. 1 — 2 feet high, naked above. Styles shorter than the 

 ovary. L. sometimes all pinnatifid. — [P. nigra (Willd.) has 

 densely pubescent peduncles.] — Dry pastures. P. VII. — IX. 



15. SiUM Linn. 



* Vitta: superficial . Lateral ridges marginal. Stylopode de- 

 pressed. SiUM Koch. 



1. S. latifolium (L.) ; 1. pinnate, Its. oblong-lanceolate equally 

 serrate pointed, inv.-l. many lanceolate. — E. B. 204. — St. 3 — 6 

 feet high, angular, furrowed, erect. L. of 9 — 13 very lai-ge 

 distant Its. Umbels terminal. — Ditches and rivers, rare. P. 

 VII. VIII. 



** Vitim deeply seated. Lateral ridges not marginal. Sty- 

 lopode shortly conical. Berula Koch. 



2. S. angustifolium (L.) ; 1. pinnate, leaflets unequally lohed 

 and cut ovate, of the stem-l. lanceolate, inv. of many lanceolate 



