ISOLOMA 



IVA 



837 



Ceciliae, Nichols. (Tydoea Cecilice, Andre). Much like 

 '/. ainabile, but Ivs. marked with violet and silvery 

 : zones or blotches: fls. 2 or 3 from each axil, the fls. pale 

 rose outside and striped in the throat, and the limb pur- 

 ple-spotted. Colombia. I. H. 23:260. 



ocellatum, Benth. & Hook. (AcJiimenes ocellata, 

 Hook.). Short-hairy on the stem: Ivs. ovate-acuminate, 

 serrate, green: fls. small, on peduncles shorter than the 

 Ivs., the tube and short, rounded lobes red, the seg- 

 ments marked with whitish and black spots. Panama. 

 B.M. 4359. 



Jaliscanum, Wats. Fig. 1185. Herbaceous or some 

 what woody at the base, 1 ft., pubescent: Ivs. opposite, 

 oblong-lanceolate to ovate-lanceolate to ovate, short - 

 'acuminate, short-stalked, serrate: fls. 2-4 on an axillary 

 peduncle, the corolla an inch long, tubular and short- 

 lobed, pubescent, scarlet. Mex. A worthy plant, not 

 yet in the trade, but has been cult. L, jj. g t 



ISONANDKA (Greek, equal anthers). Sapotacece. 

 { Isonandra Gutta is a large-leaved E. Indian tree, which 

 ', furnishes the best commercial gutta-percha. The name 

 has appeared in one southern catalogue, but the plants 

 were found to be not true to name. This plant should 

 be called Dicliopsis Gutta. In Dichopsis the floral parts 

 are in 6's, stamens 12, and the seeds have no albumen, 

 while in Isonandra the floral parts are in 4's, the sta- 

 mens 8, and the seeds albuminous. See Rubber Plants. 

 Gutta, Hook. Properly Dicndpsis Gutta, Benth. & 

 Hook. GUTTA-PERCHA TREE. Lvs. leathery, elliptic, 

 ' abruptly pointed Malaya. R.H. 1898, p. 441. 



ISOTOMA (Greek, equally cut; referring to the co- 

 rolla, and true only by contrast with Lobelia). Com- 

 panulacew. This includes a plant treated as a half-hardy 

 annual, which grows about a foot high, has curiously 

 r cut foliage, and odd fls. with a slender bent tube 1 in. or 

 more long, and 5 slender spreading lobes, each %in. 

 long. Among allied genera of garden value, Centropogon 

 and Siphocampylus have the stamens fastened at the 

 base of the tube, while in Isotoma they are at the top or 

 'above the middle. (Centropogon has an indehiscent 

 ' berry: Siphocampylus a capsule 2-valved at the top like 

 1 Isotoma.) Downingia has a tube of stamens free from 

 the corolla. 



axillaris, Lindl. Perennial, flowering the first year so 

 as to appear annual, but forming at length a hard root- 

 stock, erect, with few spreading branches: Ivs. linear, 

 ', irregularly pinnatifld, 2-3 in. long, lobes linear : pedi- 

 cels axillary, 2-6 in. long: fls. large, bluish purple, pale 

 outside. Australia. B.M. 2702 (as Lobelia senecioides) 

 and 5073 (as Isotoma senecioides, var. subpinnatifida) . 

 Not in cult. 



petraea, F. Muell. Identical with the above, except that 



the Ivs. are ovate-oblong or elliptical. Australia. The 



> plant in the trade is said to have cream-colored fls., and 



is sold as a "Lemon Verbena," a name which properly 



belongs to Lantana. 



ITALIAN MAY. Spircea hyperici folia. 



ITfiA (Greek name of the willow; because it has wil- 

 low-like Ivs., and grows near the water). Saxifraga- 

 cece. A genus of trees and shrubs, numbering about 5 

 species, inhabiting eastern N. Amer. and eastern Asia, 

 whose one representative in cultivation is /. Virginica, 

 a low, upright, somewhat coarse shrub, best known by 

 its long, upright racemes of small white fls. appearing 

 about July 1, in Massachusetts, and its brilliant autumn 

 coloring. In nature it inhabits low, wet places. In cul- 

 tivation it seems to adapt itself to almost any soil. It is 

 not perfectly hardy, but grows rapidly and seems endur- 

 ing of both sun and shade. In ornamental use it is 

 planted in masses or mixed with other shrubs of similar 

 character in the shrubby border or at the edge of woods. 

 Its somewhat coarse character does not favor its ap- 

 proach to more refined objects. In autumn it becomes 

 a brilliant red. It is prop, from seed, by cuttings and 

 by division of roots, which spread slowly and form 

 clumps of stems. It may be collected from the wild. 



Virginica, Linn. VIRGINIAN WILLOW. Fig. 1186. A 

 shrub, l%-6 ft. high, usually not more than 2-3 ft. high, 

 of upright, somewhat slender habit: Ivs. deciduous, al- 

 ternate, oblong, pointed, minutely serrate, smooth green 

 above, pale and slightly pubescent below, petioled, with- 

 out stipules, 1-3 in. long: fls. regular, 3 lines long, fra- 

 grant, white, in solitary, erect, hairy, simple, dense, ter- 

 minal racemes 2-6 in. long, given a greenish white ef- 

 fect by the stamens and pistils, not particularly showy, 

 appearing late June and July; calyx 5-cleft, persistent, 

 nearly free from the base of the ovary; corolla of 5 lan- 



1186. Itea Virginica (X%). 



ceolate, nearly erect petals and longer than the 5 sta- 

 mens : capsule slender, longitudinally 2-furrowed, 2- 

 celled, many-seeded, splitting through the simple style 

 and partition. Pa. and N. J. to Fla and La. B.M. 2409. 



A. PHELPS WYMAN. 



IVA (named after Ajuga Iva, from its similar smell). 

 Compdsitce. This includes I. frutescens, Linn., the Marsh 

 Elder or High-water shrub, a native hardy perennial 

 of no garden value, which is, nevertheless, on record as 

 having been cult. It grows 3-12 ft. high in salt marshes 

 and on muddy seashores, has serrate Ivs. and fls. as in- 

 conspicuous as those of a ragweed. See B.B. 3:292 and 

 Gray's Manual. 



