124 



EEYNGIUM ERYSIMUM. 



stalks, heart-shaped, toothed, undi- 

 vided; stem-leaves clasping, palmately 

 lobed. Mountains of Central and 



Southern Europe. A noble border 



plant, thriving in almost any soil. 

 This would prove a fine subject for 

 naturalization among our choicer 

 perennials, as it is so very distinct in 

 port. Division and seed. 



Eryngium amethystiimm (Amethys- 

 tine E.) A very handsome species, 

 with the upper part of the stem and 

 the heads of flowers of a beautiful 

 amethystine blue ; 1 to 2 \ ft. high. 

 Flowers, in summer ; heads globose ; 

 bracts 7 or 8, lance-shaped, with a 

 few teeth at the base, exceeding the 

 heads in length. Leaves, heart-shaped 

 in outline ; root-leaves divided into 

 several segments ; segments cut, spiny; 

 stalks sheathing, entire at the base ; 

 stem-leaves smaller, and more divided; 

 stems smoothish, corymbose. Dalma- 

 tia and Croatia. Borders, in ordi- 

 nary soil. Division and seed. 



Eryngium Bourgati (BourgatPs E.) 

 An interesting glaucous kind ; I to 

 2 ft. high. Flowers, in summer ; light 

 blue, in large heads ; bracts 10 to 12, 

 lance-shaped, prickly, exceeding the 

 ovate head, with 1 or 2 teeth on each 

 side. Leaves, of root nearly circular, 

 on long stalks, 3-parted ; lobes cut, the 

 lower part of each quite entire ; stalk 

 of lower stem-leaves short, not sheath- 

 ing ; stems simple, a little branched 



at the apex. Pyrenees. Borders, 



rough rockwork or banks, in sandy 

 loam. Careful division. 



Eryngium bromeliaefolium (Pine- 

 Apple-leaved E.) This has Yucca-like 

 leaves, spiny at the margins ; 2 ft. high 

 or more. Flowers, in summer ; white ; 

 bracts 10, lance-shaped, acute, exceed- 

 ing the heads. Leaves, with parallel 

 veins, bearing large awl- shaped teeth ; 

 root-leaves very long, broadly lance- 

 shaped or linear. Native of Mexico . 



Dry borders, or warm banks, in 



deep sandy loam. Seed and division. 



Eryngium giganteum (Giant Eryngo). 

 The largest kind ; 3 to 4 ft. high. 

 Flowers, in summer ; blue ; heads 

 ovate, surrounded by 8 or 9 large, ovate 

 or lance-shaped, deeply - cut, spiny 

 bracts. Leaves, heart-shaped ; lower 

 ones entire, roughish, pubescent or 

 smooth beneath, with reticulated 

 veins, crenate -toothed, and with long 

 stalks; stem-leaves clasping, deeply 

 lobed, spiny; stems dichotomously 

 branched, blue at the top. Cau- 

 casus, Armenia, and Iberia. 



Borders, in good sandy loam. Divi- 

 sion. 



Eryngium maritimum (Sea Holly}. 

 A well-known coast plant, with 

 grey, roundish, leathery leaves, spiny 

 at the edges ; 1 to 1^ ft. high. Flowers, 

 in summer ; whitish - blue ; heads 

 roundish ; bracts 5 to 7, ovate, stiff, 

 spiny or toothed. Leaves, of root 

 stalked, nearly circular, heart-shaped 

 at the base, more or less 3-lobed, 

 veined and bordered by prickly teeth ; 

 upper stem-leaves clasping. On sandy 

 shores of Britain, and many parts of 

 Europe. Borders, in any soil. Di- 

 vision. 



Eryngium planum (Flat-leaved E.) 

 1 to 2 ft. high. Flowers, in summer ; 

 blue ; heads round; bracts 6 or 7, blue, 

 lance-shaped, remotely spiny-serrated, 

 about equalling the heads in length. 

 Leaves, of root oval, heart-shaped at 

 the base, flat, crenated, undivided, 

 on long stalks ; stem-leaves stalkless, 

 middle ones undivided, upper 5-parted, 

 serrated ; stem whitish, bluish at top. 



Eastern Europe. Warm borders, 



in deep sandy soil. Division. 



Erysimum Barbarea (Yellow Rocket}. 

 Barbarea, vulgaris. In its ordinary 

 form not a very attractive object; 9 to 

 18 in. high. Flowers, in spring ; 

 yellow, crowded, in erect terminal 



