Eriochilus

(woolly lip). Orchidaceae. A half-dozen species of terrestrial orchids from Austral., with 6mall subterranean tubers and a solitary If. at the base of the stem or higher up: flowers pink or white, 1 or more and sessile on a scape or peduncle; labellum much shorter than lateral sepals, the margins often with small and erect lateral lobes. Some of the species have been mentioned as greenhouse subjects, but they are horti-culturally little known.

Eriocnema

: Bertolonia.

Eriodendron

: Ceiba.

Eriodictyon

(woolly net, referring to the under surface of the leaves). Hydrophyllaceae. Four species and many varieties (see Brand in Engler's Pflanzenreich, hft. 59, 1913) of shrubs of Calif, and the Great Basin, with alternate coriaceous entire leaves, and white, purple or blue flowers in scirpioid cymes. Apparently not cultivated E. Parryi, Greene = Nama.

Eriogfnia

: Luetkea.

Eriolobus

: Pyrus.

Eriophorum

(wool-bearing, from the Greek: alluding to the heads of fruit). Cyperaceae. Perennial rush-like plants, growing in swales: flowers in dense heads, the perianth-bristles very numerous and often becoming greatly elongated in fruit and giving the head a woollike appearance. None of them is known in cultivation, but the following names have been offered by collectors for bog gardens: E. alpinus, Linn.; E. cyperinum, Linn.; E. lineatum, Benth. & Hook.; E. polystachion, Linn.; E. vaginatum, Linn.; E. virginicum, Linn. All these are wild in the northern states, and descriptions may be found in the regular manuals. Eriophorum comprises upward of a dozen species in the northern hemisphere.

Eriophyllum

(Greek, woolly-leaved). Compositae. Herbs, mostly woody, and commonly with yellow-rayed heads; one kind cult, in a few hardy borders is a low, tufted, herbaceous perennial, with much-divided leaves, covered with wool beneath (each stem bearing about 5), and 8-rayed yellow heads 2 in. across, borne in a loosely forking fashion on peduncles 3-7 in. long. The genus was included in Bahia by Bentham & Hooker, but is now kept distinct largely because of the permanently erect involucral bracts: seeds mostly 4-angled, and pappus of nerveless and mostly pointless, colorless portions. Actinolepis is included in this genus by some authors. There are about a dozen species, in N. W. Amer. E. caespitosum, Douglas (Actinella lanata, Pursh, not Nutt. Bahia lanata, DC.), described above, has been advertised. Either moist or dry ground, Mont, to Brit. Col. and S. Calif.; very variable.

Eritrfchium

: For E. barbigerum, see Krynitzkia. For E. nothofulvum, see Plagiobothrys.

Erpetion

: Viola.

Eruca

(origin of name in doubt; probably from the Latin to burn, in allusion to the hot seeds). Cruciferae. Perhaps ten or a dozen herbs of Eu. and W. Asia, annual or biennial. Allied to Brassica: differs in the shorter, more turgid silique, with keeled valves; style elongated; seeds in 2 rows in each cell. The leaves are pinnately lobed or dentate, and the flowers rather large, yellow to purplish. E. sativa, Mill., Roquette, Tira or Rocket-Salad, is the only species cult, in this country. It is a weedy annual, resembling a mustard, 1-2 ft. high, with lyrate-pinnatifid leaves and creamy yellow or whitish flowers in a raceme (which elongates in fruit). It is sparingly run wild in Canada, U. S., and Mex. See Roquette. L. h. B.