SILPHIUM 



DAISY OBDEB 



CHBYSOGONUM 511 



B. grandiflorum. — A pretty Austrian 

 plant 1^-2 ft. high, with alternate lance- 

 shaped, slightly toothed, smooth leaves. 

 Flowers from June to October, yellow, 

 large ; involucre naked. 



Culture d-c. as above. Grows well in 

 shade. 



B. salicifolium. — Also a native of 

 Austria, l|-2 ft. high. Leaves oblong- 

 lance-shaped, somewhat serrated, hairy. 

 Flowers in June, yeUow, large, solitary. 



Culture d-c. as above. 



B. speciosum {Telekia speoiosa). — A 

 vigorous S. European perennial about 

 3 ft. high, with large, heart-shaped, 

 coarsely toothed, bright green leaves 9-12 

 in. long, with long, channelled staUts. 

 Flowers in July, deep orange-yeUow, 4 

 in. across, with reddish-brown centres, 

 very much resembKng those of Inula 

 gla/ndulosa, only larger. 



Culture da. as above. This plant is 

 seen to its best advantage in bold groups 

 in open places. 



Tribe V. HBLiANTHOlDBa;. — Leaves often opposite, rarely all alternate, entire, 

 toothed, or variously cut. Disc florets usually yellow, rarely white, purplish or violet. 

 Bracts of the involucre herbaceous, rarely dry and membranous. 



SILPHIUM (EosiN Plant). — This 

 genus includes 11 species of tall coarse 

 perennial kerbs with copious resinous 

 juice. Leaves alternate, opposite, or 

 whorled, entire, toothed or lobed. 

 Flower-heads large, yeUow, monoecious, in 

 corymbose panicles. Bay florets female, 

 disc florets sterile. Involucre broad and 

 flattish, with bracts in many rows. 

 Achenes smooth, flat, longitudinally 

 winged ; wings sometimes toothed or 

 notched at the top. 



Culture and Propagation. — These 

 plants grow in any rough soil and are 

 suitable for rough places in the garden in 

 bold masses. They may be increased by 

 division early in artitumn or in spring. 

 Seeds may also be sown when ripe in 

 cold frames, and the seedlings transplanted 

 to the open ground the following May, 

 having been pricked out or thinned out at 

 least once after germination. Seedling 

 plants sometimes take 2 or 3 years to 

 arrive at a really good blooming condition. 

 Increase by dividing the roots is therefore 

 to be preferred. All natives of N. America 

 (United States). 



S. laciniatum (Compass Plant; Pilot 

 Weed ; Polar Plant). — A vigorous peren- 

 nial with stout stems 8 ft. or more high. 

 Leaves pinnately parted, usually stalked 

 and clasping at the base ; segments lance- 

 shaped, acute, out - lobed or pinixatifid, 

 rarely entire. Flowers in July, 1-2 in. 

 across, yellow, forming racemose spikes. 



The leaves of this plant are said to 

 turn their faces due north and south on 

 the open prairies — hence the popular 

 names. 



■Culture dc. as above. 



S. perfoliatuin {Cup Plant). — A 

 square-stemmed plant 4-8 ft. high, -with 



entire ovate leaves 6-15 in. long, coarsely 

 toothed, the upper ones united by their 

 bases, forming a cup-hke disc which 

 holds a good deal of water when it rains ; 

 lower ones abruptly narrowed into winged 

 stalks, connate at the base. Flowers in 

 July, yellow, about 2 in. across. 

 Culture do. as above. 



S. terebinthinaoeum (Prairie Docli). 

 A smooth-stemmed species 4-10 ft. high, 

 with ovate oblong, somewhat heart-shaped, 

 toothed leaves, 1-2 ft. long, on slender 

 stalks. Flowers from July to September, 

 small, yellow. The variety pinnatifidum 

 has deeply cut leaves. 



Culture dc. as above. 



S. trifoliatum. — This grows 4-6 ft. 

 high, with rather smooth slender stems. 

 Upper leaves lance-shaped, pointed, entire 

 or slightly toothed, short-stalked, 3-4 in 

 a whorl, or the highest opposite. Flowers 

 in August, yellow, in loose panicles. 



Culture dc. as above. 



CHRYSOGONUM.— A smaU genus 

 of herbs or shrubs with opposite, entire, 

 toothed, or pinnately cut leaves, and 

 yellow flower-heads. 



C. virginianum. — A pretty N.American 

 perennial 6-9 in. high, with ovate coarsely 

 toothed leaves 1^-3 in. long, and yellow 

 flower-heads in June, each one surrounded 

 by 5 deep golden-yellow bracts of the 

 involucre. 



Culture and Propagation. — This is 

 the only species out of half a dozen known 

 in gardens. It looks well in bold masses 

 in the rock garden or border, and flourishes 

 in well-drained peat and loam in partially 

 shaded and sheltered spots. It may be 

 easily increased by dividing the tufts in 

 spring as growth is commencing. 



