880 



PB ACTIO AL GUIDE TO GARDEN PLANTS 



PAEIS 



Culture and Propagation. — This 

 species and the others flourish in damp 

 and shady places in sandy peat, and may 

 be grown in sheltered nooks of the rock 

 garden in bold masses for effect. The 

 easiest way to increase them is by divid- 

 ing the roots in spring as growth is com- 

 mencing, or early in autumn. Seeds if 

 obtainable may also be sown in cold 

 frames. 



C. umbellata. — A pretty little North 

 American plant 6-12 in. high, with deep 

 green Lily of the Valley-hke leaves, and 

 rounded umbels of white starry flowers 

 with protruding stamens produced in May 

 and June. 



Culture dc. as above. 



C. uniflora. — A distinct N. American 

 perennial about 6 in. high, with lance- 

 shaped acute leaves and white flowers, 

 the latter usually being solitary, rarely 

 in pairs, and borne in July. 



Culture Ac. as above. 



TRILLIUM (American Wood Lily). 

 A genus of dwarf herbaceous perennials 

 with short thick descending or horizontal 

 rootstocks, and remarkable for having its 

 leaves and flowers arranged in threes. 

 The three broad almost sessile or long- 

 stalked leaves are whorled on top of 

 the stems, and are 3-5-nerved and 

 feather-veined, and a solitary erect or 

 drooping flower is borne with or without 

 a stalk from the centre. The 3 outer seg- 

 ments of the perianth are sepal-Uke and 

 persistent, while the 3 inner larger ones 

 are petal-like. Stamens 6. Stigmas 3. 

 Capsule a round or ovoid often 3-ribbed 

 berry. 



Culture and Propagation. — The 

 Wood Lilies are interesting plants suit- 

 able for half-shady places in the flower 

 border, or near shady walks, and also in 

 shady nooks in the rockery. They like a 

 deep well-drained peaty soil and plenty 

 of water during the summer months. 

 New plants may be obtauied by carefully 

 dividing the rootstocks in autumn when 

 the plants are well established. Of the 

 species described below T. grandiflorum 

 is the best and most showy. They are 

 all natives of N. America. 



T. cernuum. — A species about 18 in. 

 high, with broadly rhomboidal leaves 2-6 

 in. long, abruptly tapering to a point and 

 shortly stalked. The rather small droop- 

 ing flowers appear in April and May, 



having white wavy recurved inner seg- 

 ments, rather longer than the outside 

 lance-shaped ones. 



Culture dc. as above. 



T. erectum (T. fcetidum; T. pendu- 

 lum; T.rhomboideum). — This is variously 

 known in America as Beth-root, Birth - 

 root, and Lamb's Quarters. It grows 

 about 1 ft. high, and has sessile broadly 

 rhomboidal leaves, abruptly tapering to a 

 point. The fetid flowers appear in May 

 on stalks 1^-3 in. long, having dark purple 

 inner segments. In the variety album they 

 are greenish-white or rarely yellowish, 

 and in ochroleucum yellowish-white. 



Culture (tc. as above. 



T. erythrocarpum (Painted Wood 

 Lihj). — This is about the same height as 

 the other species, with ovate tapering 

 leaves 3-5 in. long, rounded at the base 

 and shortly stalked. The flowers appear 

 in April and May, the wavy inner segments 

 being white striped with purple at the 

 base. 



Culture dc. as above. 



T. grandifloruni {Wake Robin). — A 

 fine free-growing species 12-18 in. high, 

 with almost stalkless rhomboid ovate 

 taper-pointed leaves 3-5 in. long, and 

 snowy white flowers about 3 in. across, 

 produced in May, and sometimes flushed 

 with rose. The variety maximum is a 

 larger flowered form. 



Other Trilliums not so weU-known are 

 nivale, white; ovatum, similar to ^ra«(ii- 

 florum but earlier; /-ecMT^aiMWi, with purple 

 recurved flowers ; sessile, flowers at first 

 yellow, afterwards deep purple, appear- 

 ing in March and April ; the variety 

 atratum has blackish-carmine flowers of 

 great distinctness, and another variety is 

 white, striped and spotted with purple. 

 T. stylosuin from the S. United States 

 (also known as T. Catesbcei and T. 

 nervosum) produces its rose-tmted flowers 

 in April and May, but is similar in habit 

 to the others. 



Culture dc. as above. 



PARIS (Hekb Paris). — a small 

 genus of herbaceous plants with creeping 

 rootstocks and simple stems with one 

 whorl of 4 or more leaves, and solitary 

 strong-smelling greenish flowers with 4-6 

 distinct segments, the outer sepal-like 

 ones being spreading herbaceous, ovate or 

 wedge-shaped, the inner petal-like ones 

 linearorawl-shaped. Stamens8-12, nearly 



