122 



CALYCIFLOR/E 



than the last, and resembling Helosciadiunt nodiflorum, from which 

 it may be distinguished by its stalked umbels, and by its having 

 general and partial bracts, which are reflexed and often cut. 

 Watery places ; not uncommon. Fl. August. Perennial. 



BUPLEURUM ROTUNDI- 



folium (Common 

 Thorow-wax, Hare's-ear) 



16. Bupleurum (Thorow-wax) 



i. B. rotundifolium (Common Thorow-wax, 

 or Hare's-ear). Stem branched above ; leaves 

 roundish, egg-shaped, undivided, perfoliate ; 

 general bracts wanting ; partial ones large, 

 bristle-pointed, thrice as long as the flowers. 

 A singular plant, well distinguished by its 

 perfoliate leaves., which have a glaucous hue, 

 and its large, greenish-yellow, partial bracts, 

 which are far more conspicuous than the 

 minute yellow flowers. Cornfields, on chalky 

 soil. Fl. July. Annual. 



2. B. tenuissimum (Slender Hare's-ear). 

 Remarkable for its slender, wiry stem, about 

 a foot high and usually ascending; and its 

 very narrow, undivided leaves, and small 

 umbels of very few minute yellowish flowers. 

 It grows in salt marshes on the south and 

 east coasts of England. Fl. August, Sep- 

 tember. Annual. 



3. B. aristatum (Narrow-leaved Hare's-ear). A small plant 

 3-6 inches high, with pale, rigid leaves, inconspicuous greenish 

 flowers, and large, sharp-pointed bracts. Found nowhere in Great 

 Britain but at Torquay and Eastbourne, and in the Channel Islands. 

 Sandy, waste places. Fl. June, July. Annual. 



4. B. falcatum (Sickle-leaved Hare's-ear). A slender, erect 

 species 1-3 feet high, with slightly branched, hollow stems, and 

 narrow, entire leaves, pointed and curved, ribbed on the under side ; 

 dowers yellow, minute. Found near Ongar, in Essex, and in Hert- 

 fordshire. Probably not indigenous. Fl. August, September. 

 Perennial. 



17. (Enanthe (Water Dropwort) 



1. Gl. fistulosa (Tubular Water Dropwort). Root sending out 

 runners ; stem-leaves pinnate, shorter than their tubular stalks. 

 \n erect, slightly branched plant 2-3 feet high, well marked by its 

 tubular stems, leaves, and leaflets. The lower leaves are entirely 

 submerged, and of these the leaflets are flat, but all the rest of the 

 plant consists of a series of tubes. The umbels are of very few rays, 

 which, when in fruit, are nearly globular. Watery places ; not un- 

 common. Fl. July, August. Perennial. 



