LAYIA 



LEDUM 



895 



LAYIA (Thomas Lay, naliiralist in the Beechey voy- 

 age). Co IK /.ids if w. Atumt ]|{ .sjiecies of California an- 

 nuals, with yellow or wbitr lis. in spring or parly sum- 

 mer. Lvs. chicliy alternate, all entire or some, jiarticn- 

 larly the lower, with alxixit 2 |ia.irs of linear side lolies 

 above the middle of the leaf. For general culture they 

 are probably inferior to Madia elegans, which has a simi- 

 lar habit and is distinguished by the blood-colored s}>ut 

 at the base of the rays. The fls. in Layia are about 1-1/^ 

 in. across, and the rays are distinctly 3-toothed. The 

 species described below are diffuse, much-branched and 

 about a foot high. It is probable that for best results 

 they should be started early indoors, and transplanted 

 outdoors in ]May. Easy to grow. 



A. Ii'ai/s oitirelij white, 



glanduldsa, Hook. Hispid, sometimes glandular: lvs. 

 1-lK in. long, 2-3 lines broad, linear, the upper ones all 

 entire: rays 8-13. B.M. 0850. — Not cult., but desirable. 



AA. Hays yellow, sonictimes tipped irhlle 

 B. Plants hairy. 

 61egans, Torr. & Gray. All the upper lvs. entire: rays 

 10-12, yellow, rarely white-tipped : pappus white or whlt- 



LEATHEK FLOWER. Clematis Vioma. L. Jacket. 

 L. Leaf. Ohaino'daphne. L. 



CijriJta. 



1251. Air-Layering:. 



ish, its copious villous hairs much shorter than the awn- 

 shaped bristles, which are long plumose below the miil- 

 dle. This and the next have a few small, scattered, 

 stalked glands which are wanting from the last 

 two. Gn. 31, p. 405. — Procurable from western 

 collectors. Perhaps the best of the genus. 



platygl6ssa, Gray. Some of the upper lvs. pin- 

 natitid : rays light yellow, commonly white- 

 tipped ; pappus of stout, awn-like bristles which 

 are upwardly scabrous. B.M. 3719. — Cult, in Eu. 



BE. Plants not Jtairif or af most minateUj 

 pnljescent. 



Calligl6ssa, Gray. Akenes villons-pubescent or 

 partly glabrate: pappus of 10-18 very unequal 

 and rigid awl-shaped awns. B. R. 22:1850 (er- 

 roneously as Oxijara clirysantliemoides). 



chrysanthemoides, Gray {Oxiinra clirysantlie- 

 moldca, DC). Akenes wholly glabrous, broader: 

 pappus none. Not B.R. 22:1850, which is the 

 above. According to Thorburn this is a hardy 

 annual trailer witii white Hs., blooming in sum- 

 mer and autumn. 



LEAD PLANT is Ainorpha canesceyis. 



LEADWORT. Plumbago. 



1252. A horizontal inuUiple layer. 



LEBIDIEROPSIS (Greek; resembling Lebidiera, a 



genus now inchnled in Cleistanthus). \Enphorbidcea:. 

 This genus includes a small tree with very hard wood, 

 and of unknown value, introduced from a. bntanical gar- 

 den of northern India by Reasoner Bros., Oneco, Ela. 

 Lebidieropsis was reduced by Bentham and Hooker to 

 the rank of a sul)genus of Cleistanthus, but in the 

 Elora of British India Hooker says that Lebidieropsis 

 should probalily be restored, the se'?ds being globose, 

 while in Cloistiintbus they are always oblong. The seeds 

 also ditier in structure. Generic characters of Cleistan- 

 thus are: trees or slirubs: lvs. alternate, 2-ranked, en- 

 tire: Hs. small or minute, in axillary clusters and spikes, 

 monoecious; calyx Scleft or 4-0-cIeft; petals as many, 

 minute; stamens 5; filaments united in a column in the 

 center of the disk: ovary 3-celled. 



orbicularis, Muell., Arg. Lvs. IV^— 4 in. lonir, 1 ^2-3 in. 

 wide, leathery, broadly obovate or elliptic, tip rounded 

 or retuse, glaucous beneath, nerves 5-8 pairs: fls. silky, 

 .3-0 in a cluster; yietals fleshy, narrow: seeds 2 lines 

 thick, chestnut-brown, with scanty albumen. Hooker 

 does not recognize the 3 varieties distinguished by 

 Mueller on the shape and hairiness of the lvs. 



LfiDUM {h'<l"ii, ancient Greek name of Cistus). 

 Erieaeew. Lahkadou Tea. OrnanienTal h^w evergreen 

 shrubs with alternate, entire, short-petioled lvs., slightly 

 fragrant when bruised, and with handsome white fls. in 

 terminal umbels, appearing in early summer. They are 

 all hardy North, and well adapted for borders of ever- 

 green shrubberies or for planting in swampy situations. 

 They thrive as well in sunny as in partly shaded situa- 

 tions, and prefer a moist, sandy and peaty soil. Trans- 

 planting is easy, if the plants are moved with a sufficient 

 ball of earth. Prop, by seeds sown in spring in sandy 





1253. Serpentine Layering. 



peat and treated like those of Azalea and Rhododen- 

 dron, the young plants growing but slowly; increased 

 also by layers and division. Three species in the arctic 

 and cold regions of the northern hemisphere, all foun<] 



57 



