HELENIUM HELIANTHEMUM. 



139 



Stem branching at top. On the banks 

 of rivers, ponds, and ditches in North 

 America. Borders, and naturaliza- 

 tion in woods and copses, or by 

 the margin of streams. Division or seed. 



Helenium Hoopesii (Hoopes's H.) 

 A showy but somewhat coarse peren- 

 nial, with a simple stem ; about 2| ft. 

 high. Flowers, early in summer ; bright 

 orange, about 2 in. across ; segments 

 of involucre long, narrow, and pointed. 

 Leaves, lance- shaped, pointed, smooth, 

 clasping the stem ; upper part of stem 



slightly downy. Rough borders, in 



any soil. Division or seed. 



Helianthemum formosum (Beautiful 

 H.} A very attractive rock-rose ; 

 1 to 34 feet high. Flowers, in summer ; 

 yellow, large and handsome, with a 

 dark spot at the base of each petal ; 

 sepals 3 ; calyces and peduncles 

 villous. Leaves, tomentosely-villous, 

 younger ones hoary, on short stalks, 

 lance-shaped, 3-nerved. Stems erect, 

 branched. Portugal. The rock- 

 garden, on sunny warm slopes, or 

 raised and warm borders, in light 

 sandy or calcareous soil. Seed or 

 cuttings. 



Helianthemum ocymoides (Basil-like 

 H.) Cistus algarvensis. Another 

 fine kind, with hoary branches ; 1 to 3 

 ft. high. Flowers, in summer ; bright 

 yellow, with a dark purple eye, nearly 

 14 in. across ; sepals 3, much pointed ; 

 peduncles long, branched, paniculate; 

 pedicels opposite, somewhat umbel- 

 late. Leaves, from 1 to 1^ in. long, 

 narrow and pointed ; stem-leaves obo- 

 vate, 3-veined, almost stalkless, green; 

 those of the branches stalked, turned 

 back at the top, and hairy on both sides. 

 Dry rocky hills, in Spain and Portu- 

 gal. Similar positions and treat- 

 ment to those for the preceding. Seed 

 or cuttings. 



Helianthemum Pilosella (Downy 

 H.) An interesting dwarf kind 

 with a woody . prostrate stem and 



ascending branches ; about 6 in. high. 

 Flowers, in summer ; small, yellow, in 

 short terminal clusters. Leaves, oval- 

 elliptical, entire, downy on both sides, 

 whitish underneath, with a prominent 



dorsal vein. Pyrenees. The rock. 



garden and margins of dry borders, 

 in ordinary soil. Seed and cuttings. 



Helianthemum rosraarinifolium 

 (Rosemary-leaved IT.) A neat erect 

 little bush ; about 1 ft. high. Flowers, in 

 summer ; white, on very short 

 axillary stalks, bearing each from one 

 to three flowers. Leaves, linear-oblong, 

 rolled back at the margin, dark green, 

 whitish underneath. North America. 



The rock-garden and borders, in 



sandy well-drained loam. Cuttings 

 and seed. 



Helianthemnm Tuberaria (Truffle 

 Sunrose). This differs completely 

 in aspect from the shrubby species, 

 and is second to none in beauty; 6 to 

 12 in. high. Flowers, in summer ; re- 

 sembling a single yellow rose, with 

 dark centre, 2 in. across, drooping 

 when in bud ; pedicels disposed in 

 something like a panicle, furnished 

 with bracts at the base ; calyx smooth, 

 shining. Leaves, of root, ending in 

 the foot-stalk, ovate-oblong, tomen- 

 tosely hairy, greyish ; under surface 

 nerved, upper surface furrowed ; stem- 

 leaves lance-shaped, stalkless, almost 



smooth. Southern Europe. The 



rock-garden on warm ledges, in well- 

 drained sandy or calcareous soil. 

 When sufficiently plentiful it should 

 be used in the mixed border. Seed 

 and careful division. 



Helianthemum venustum (Showy 

 Sunrose). A hardy evergreen trailer, 

 with ascending stems, about 6 in. 

 high. Flowers, in summer ; deep red, 

 about | in. across, in terminal clusters. 

 Leaves, opposite, oval-oblong, short- 

 stalked, slightly reflexed, and finely 

 toothed on the margin. South of 

 Europe. The rougher parts of the 



