ELODEA 



EMBOTHRIUM 



1111 



Yur. gigantea, Hort. GIANT WATER-WEED. A much 

 stronger grower than the species and a desirable 

 plant for the aquarium, and a good oxygenator. Now 

 generally used in preference to the type. 



WM. THICKER and WILHELM MILLER. 



1392. Elsholtzia cristata. 



ELdDES: Hypericum. 



ELSHOLTZIA (John Sigismund Elsholtz, author of 

 unpublished Flora Marchica, the MS. of which is in the 

 Royal Library, Berlin). Labidtse. Herbs or undershrubs 

 grown chiefly for their blue or lilac flowers appearing 

 in dense spikes late in summer. 



Usually aromatic: Ivs. opposite, short-petioled, ser- 

 rate: fls. in usually 1-sided, terminal spikes; calyx 

 tubular or campanulate, 5-toothed; corolla 2-lipped or 

 slightly so; lower lip 3-lobed, the upper undivided, 

 emarginate, concave; stamens 4, exserted; anther-cells 

 diverging: fr. consisting of 4 ovoid or ovoid-oblong 

 nutlets. Twenty species in E. and Cent. Asia, 

 south to Java, 1 in Eu. and 1 in Abyssinia. Of 

 the cult, species E. cristata and E. Stauntonii 

 are hardy N., while E. polystachya is tender. 

 They are chiefly valued for their late-appearing 

 fls., profusely produced in dense upright spikes; 

 they do not seem particular as to the soil, but 

 demand a sunny position to bloom well. Prop, 

 is by seeds, sown in spring ; also with the suff ruti- 

 cose species by greenwood cuttings in summer. 



cristata, Willd. Fig. 1392. Twelve to 18 in. 

 high, with opposite, petioled, ovate^- oblong 

 toothed Ivs. and small, light blue fls. in crowded, 

 more or less 1-sided spikes : calyx enlarging in fr. 

 Asia. B.M. 2560. Hardy annual, with very aromatic 

 foliage and attractive, upright habit. Said to be a good 

 bee plant. 



Stauntonii, Benth. Undershrub, to 5 ft.: branchlets 

 terete, pubescent: Ivs. ovate-oblong to oblong-lanceo- 

 late, acuminate, serrate, bright green and glabrous 

 above, lighter green and densely glandular below, 3-5 NIV 

 in. long: fls. lilac-purple, in dense 1-sided spikes 4-8 jjj 

 in. long, usually panicled at the end of the branches; 

 stamens and style long exserted. Sept., Oct. N. China. 

 B.M. 8460. G.C. III. 51:21. Gn. 75, p. 533. M.D.G. 

 1910:541-2; 1913:52. 



E. polystachya, Benth. Undershrub, to 6 ft. : Ivs. elliptic-oblong 

 to lanceolate, serrate, pubescent on the veins beneath and glandular, 

 3-5 in. long: fls. white, in very slender spikes 2-6 in. long. Hima- 

 layas, W. China. ALFRED REHDER. 



ELYMUS (Greek name for a kind of millet). Gra- 

 minese. LYME- GRASS. WILD- RYE. Erect perennial 

 grasses with terminal usually bristly spikes somewhat 

 resembling rye, sometimes grown as ornamentals and 

 having other uses. 



Leaves flat or convolute: spikelets 2-6-fld., often 

 long-awned, the uppermost imperfect, sessile, in pairs 

 (rarely in 3's or 4's), at each joint of the continuous or 1393. Elymuscana- 

 articulate rachis, forming terminal spikes; glumes acute deasis. ( x J4) 



or awned, often placed at the front of the spikelet. 

 Species about 25, in the temperate regions of both 

 hemispheres. For E. Hystrix, see Hystrix. See p. 3568. 

 arenarius, Linn. SEA LYME -GRASS. Stout, coarse 

 perennial, 2-8 ft. high, with strong, creeping rootstocks: 

 Ivs. long, rigid, smooth: spikes dense, terminal, 6-12 in. 

 long; spikelets about 1 in. long and 3-4-fld., awnless. 

 G. 15:701. Dept. Agric., Div. Agrost., 7: 319. Some- 

 times used for binding the drifting sands of our Atlan- 

 tic and Pacific coasts, especially when combined with 

 beach grass, Ammophila arenaria. The seed is also 

 used by the Digger Indians for food. 



canadensis, Linn. CANADA LYME-GRASS. TERREL 

 GRASS. Fig. 1393. Rather stout, smooth perennial, 

 2-5 ft. high, with broad, flat Ivs. 6-12 in. long: spikes 

 4-9 in. long, exserted, nodding; spikelets very rigid, 

 3-5-fld. ; lemmas long-awned. Common in low thickets 

 and along streams in rich, open woods throughout the 

 country. Cult, as an ornamental plant. Var. glauci- 

 fdlius, Gray (E. glaucifdlius, Hort.), is pale and glau- 

 cous throughout, with usually more slender awns. 

 Cult, as an ornamental grass. 



condensatus, Presl." GIANT RYE-GRASS. The largest 

 of the native rye-grasses, growing to the height of 5-10 

 ft.: culms in dense tufts, stout: spikes 6-12 in. long, 

 very variable, compact or interrupted, bearing branch- 

 ing clusters of spikelets at each joint; glumes subulate; 

 lemmas awnless or mucronate. Rocky Mt. regions and 

 the Pacific slope. Cult, as an ornamental. A Pacific 

 Coast form has large branched heads. 



E. glaiicus, Regel. 

 A glaucous-leaved, 

 dense, cespitose, 

 hardy perennial 

 grass 3-4 ft. high, 

 with very short, 

 smooth Ivs. and 

 erect, elongated 

 spikes: spikelets in 

 2's, erect, usually 5- 

 fld., densely villous- 

 pubescent , short- 

 awned. Turkestan. 

 Rarely in cult, 

 as an ornamental 

 grass. 



P. B. KENNEDY. 

 A. S. HITCHCOCK. f 



EMBOTHRIUM 



(name refers to the 

 structure of the an- 

 thers) . Protedcese. A 

 few trees and shrubs 

 of S. Amer., one of 

 which is offered abroad 

 as a greenhouse sub- 

 ject, grown from seeds, 

 and apparently prized 

 for the fls. Foliage sparse, 

 coriaceous, entire: fls. in 

 dense racemes, showy, per- 

 fect; perianth with a cylind- 

 rical split tube, the limb ovoid 

 or globose in bud but becom- 

 ing oblique or recurved; 

 stamens 4, the anthers at- 

 tached in lobes of the peri- 

 anth: follicles oblong, 1- 

 celled, many-seeded. E. coccineum, 

 Forst., is a shrub bearing bright scar- 

 let fls. about 2 in. long in many-fld. 

 terminal sessile racemes: perianth 

 tubular, upwardly curved, the 4 reflex- 

 ing twisting lobes representing a third 

 of its length; anthers imbedded in the 

 concave apices of the perianth-lobes; 

 pistil with an elongated cylindrical 

 ovary and long-exserted red style: Ivs. 



