LYONOTHAMNUS 



1 LYONOTHAMNUS (Lyon's shrub; named f or W. S. 



r^yon, who sent specimens to Asa Gray from Santa Cata- 



ina Island, California). Saxifragdcece. A monotypic 



j Venus confined to the islands of the Santa Barbara 



hannel, and represented by two forms, L. floribundus 



>\\s described by Gray, and L. asplenifolius as described 



>v Greene. These forms differ only in the structure of 



he Ivs., as the species is dimorphic. Locally the tree is 



inown as ironwood. It is rather plentiful in Santa 



truz Island, attaining 40 and 50 ft. in height. It is less 



j frequent and more dwarfed in other islands of the group. 



Fls. hermaphrodite; calyx 1-3-bracteoled ; tube hemi- 



jspherical; lobes 5; disklanate; petals 5, orbiculate, im- 



|bricate in the bud; stamens 15, inserted with the petals 



,'on the margin of the disk: carpels 2, free: ovules 4: 



stigma subcapitate. 



floribundus, Gray. Lvs. opposite, lanceolate, petiolate, 

 subentire, oleander-shaped : Us. white, very numerous in 

 a large, flattish, terminal cyme. Highly praised for out- 

 door culture and for pots. The clusters are 4-5 in. across. 

 The form asplenifolius has pinnate Ivs. with pinnae cut 

 to the rib. F . FRANCESCHI. 



LYSICHITUM (Greek, a loose or free cloak,- probably 

 referring to the spathe). Also written Lysichiton. 

 Aracece. A genus of one species, a plant resembling 

 the skunk cabbage, offered in 1892 by Oregon dealers. 

 Nearly stemless swamp herb with large Ivs. from a 

 1 thick, horizontal rootstock; spathe sheathing at base, 

 with a broad colored lamina or none, at first enveloping 

 the cylindrical spadix, which becomes long-exserted 

 upon a stout peduncle: fls. perfect, crowding and cover- 

 ing the spadix ; perianth 4-lobed ; stamens 4 : ovary 

 2-celled, 2-ovuled: ovules horizontal, orthotropous. 



Camtschatcense, Schott. Lvs. 1-2% ft. long, 3-10 in. 

 wide, oblong-lanceolate. May, June. E. Siberia, Japan, 

 Ore., Calif. 



LYSILOMA is a small leguminous genus allied to 

 Acacia, but not in cultivation. They are tender trees 

 and shrubs, with flowers in heads or in cylindrical spikes. 

 The pods are straight and flat, and the valves open 

 away from the persistent sutures. Some of these plants 

 are often called Acacias. Thus A. Acapulcensis = L. 

 Acapulcensis, Benth.; A. divaricata = _L. Schiedeana, 

 Benth.; A. latisiliqua = Z/. latisiliqua, Benth. 



LYSIMACHIA (probably after King Lysimachus). 

 Primuldcece. LOOSE-STRIPE. Found in temperate and 

 subti-opical regions of all parts of the world. Erect or 

 creeping leafy herbs, with opposite or whorled, entire, 

 usually black-punctate Ivs., spicate, racemose or soli- 

 tary fls., a rotate, 5-parted corolla with an equal number 

 of slightly monadelphous stamens opposite the lobes, a 

 1-loculed capstile, and many seeds on a central placenta. 

 Only a few in cultivation, and these all perennials. They 

 differ from related genera in the absence of staminodia 

 between the stamens, which are usually slightly united. 



A. Flowers yellow. 



B. Stem creeping : Ivs. round-ovate, obtuse. 

 Nummularia, Linn. MONEY-WORT. CREEPING CHARLIE. 

 CREEPING JENNY. Glabrous, forming large patches : Ivs. 

 opposite, rarely cordate, petiolate, %-l in. long: fls. 8-12 

 lines broad; sepals cordate or lanceolate, acute, half as 

 long as the 5 oval, sparingly dark-dotted corolla lobes; 

 filaments glandular. June-Aug. Europe; also natural- 

 ized extensively in the eastern U. S. R.H. 1891, p. 303. 

 B.B. 2:589. Very useful for rustic vases and baskets, 

 also for carpeting ground in shady places. Var. aurea, 

 Hort. Lvs. all or in part bright yellow. 



BB. Stem erect: Ivs. lanceolate, acute. 

 '. Plant glabrous or nearly so : fls. 3-6 lines broad. 



stricta, Soland. Simple or branched, glabrous, 8 in. 

 to 2 ft. high; Ivs. opposite, lance-linear, acute at both 

 ends, glaucous beneath, scarcely veiny, 1-3 in long: 



s. 3-5 lines broad, very numerous, in a distinct, elon- 

 gated, terminal raceme; pedicels 3-9 lines long, slender; 

 corolla lobes elliptical, streaked with purple; filaments 



LYSIMACHIA 



961 



glandular. Common on moist ground in the eastern 

 U.S. B.M. 104 (as L. bulbifera). D. 141. B.B. 2:588. 

 Often bears bulblets in the leaf-axils after flowering. 



quadrifdlia. Linn. Usually simple, sometimes slightly 

 pubescent, 1-3 ft. high: Ivs. verticillate, in 3's-4's, 

 rarely some opposite, lanceolate, oblong or ovate, acute, 

 1-4 in. long, green beneath, veiny: fls. axillary, 3-6- 

 lines broad, on very slender pedicels, which are %-!% 

 in. long; calyx and corolla as in the last. Dry soil, 

 eastern U.S. D. 139. B.B. 2:588. 



cc. Plant densely pubescent: fls. 9-12 lines broad. 



vulgaris, Linn. COMMON YELLOW LOOSESTRIFE. Tall 

 and erect, 2-3 ft. high, and stout; branched above, downy,, 

 especially on the stem : Ivs. verticillate, in 3's-4's, ovate- 



1342. Ly thrum Salicaria (X %). (See p. 962.) 



lanceolate or lance-oval, acute at both ends, nearly ses- 

 sile: fls. in the upper axils, or densely paniculate at the 

 summit; calyx often red-margined; corolla large, the 

 lobes broad, glabrous. Europe, Asia. R. H. 1891, p. 

 303. Quite showy when grown in clumps. 



