842 



JACOBINIA 



AAA. Fls. scattered or in loose more or less leafy pani- 

 cles : of medium length, straight, or nearly so, 

 not deeply cleft. (Subgenus Libonia.) 



paucifldra, Benth. & Hook. (Seric6graphis paucifldra, 

 Nees. LiUnia floribunda, C. Koch). A common con- 

 servatory plant, subshrubby, but usually treated as a 

 pot-plant, with terete, short-jointed, close pubescent 

 branches : Ivs. elliptic or elliptic-oblong, short and 

 rather small, entire, very short-stalked : fls. 1 in. long, 

 tubular, drooping or nearly horizontal, scarlet with 

 yellow at the end, the lips short. Brazil. A most flofif- 

 erous plant, almost as easy to grow as a fuchsia, and 

 to be handled in essentially the same way. 



Penrhosi6nsis (Libonia Penrhosiensis, Carr.). Fig. 

 1190. Much like the last, but Ivs. more pointed and fls. 

 larger and more showy. E.H. 1876:50. Gng. 2:131. -It 

 is a most excellent plant, and is taking the place of J. 

 pauciflora. It is hybrid of J. pauciflora and J. Ghies- 

 'brechtiana. Another and very similar hybrid of the same 

 parentage is Sericobonia ignea, Lindl. & Andre. I.H. 

 22:198. J. Penrhosiensis is a winter bloomer, a little 

 earlier than J. pauciflora. Cuttings struck in spring 

 make full blooming subjects by fall and early winter. 

 This and J. pauciflora are common conservatory plants. 



Ghiesbreghtiana, Benth. & Hook. (Cyrtanthera 

 Ghiesbreghtiana,Decne. SericographisGhiesbreghtidna, 

 Nees. justicia Gheisbreghtidna, Lena. Apheldndra 

 Ghiesbreghtidna, Hort.). Lvs. narrower (lance-ovate) 

 and longer, acuminate : fls. in a terminal, very loose 

 panicle, tubular, scarlet, appearing at the same season 

 as those of J. Penrhosiensis. Mex. F.S. 4:339. Introd. 

 by Ghiesbreght; but when the plant was transferred to 

 the genus Jacobinia the name was misspelled Ghies- 

 brechtiana. 



J. Lindeni, Nichols. (Justieia Lindeni, Houll.), is a Mexican 

 subshrub, with lance-ovate Ivs., and a fascicled head of orang^- 

 yellow fls. Does not appear to be in the Amer. trade. R.H. 

 1870:250. L. H. B. 



JACOB'S LADDER. Polemonium cceruleum. 

 JACOB'S STAFF. Fouquieria splendens. 



JACQUEM6NTIA (after Victor Jacquemont, a French 

 naturalist; died 1832). Convolvuldcece. About 50 spe- 

 cies of tropical and subtropical twining herbs, allied to 

 Ipomoea and Convolvulus, to which they are inferior for 

 garden culture. They are distinguished from Ipomoea 

 by having two stigmas instead of one; and from Con- 

 volvulus by having the stigmas ovate or oblong instead 

 of linear-filiform to subulate. I. violacea makes an at- 

 tractive greenhouse climber for summer and autumn 

 flowering, but is not as desirable for this purpose as 

 several species of Ipomoea. It is apt to become leggy 

 after a few years. Propagated readily by seeds or cut- 

 tings. For other botanical characters and cultural di- 

 rections, see Ipomoea. 



violacea, Choisy (Convdlvulus pentdnthus. Jacq.). 

 Stem perennial, somewhat shrubby at base, twining 6-8 

 ft., pubescent or nearly glabrous: Ivs. cordate to ovate- 

 lanceolate, acuminate: peduncles slender, bearing 5-12 

 fls. in a loose cymose cluster: corolla about 1% in. wide, 

 short-funnelform, sharply 5-angled, rich violet-blue. 

 June-Sept. Trop. Amer., and as farnorth as Fla. B.M. 

 2151. B. 4:197. P.M. 6:219. In var. can6scens, Hort. 

 (J. cane"scens, Benth.), the whole plant is covered with 

 short, brownish down. B.R. 33:27. 



tamnifdlia, Griseb. Plant annual, usually low and 

 erect, at length twining if support is near, covered with 

 tawny yellow hairs: Ivs. cordate, ovate, long-petioled : 

 peduncles bearing many fls. in dense, involucrate clus- 

 ters: fls. less than Y z in. long, violet. Cult, and waste 

 ground, S. C. to Ark., and southward. 



S. W. FLETCHER. 



JACQUfNIA (Nicholas Joseph de Jacquin, 1727-1817, 

 distinguished botanical painter and writer, who painted 

 many West Indian plants from nature). Myrsindcece. 

 About 20 species of tropical American trees and shrubs, 

 one of which is called Bracelet Wood in the West Indies, 

 because the brown and yellow shiny seeds are made into 

 bracelets. It is a low tree, with evergreen Ivs. some- 



JASMINUM 



what like box but obovate, and racemes of small, white, 

 honey-scented fls. which in the North under glass would 

 be borne in winter. It seems to be cult, only in S. Fla. 

 and S. Calif, outdoors. Generic characters are Ivs. 

 rigid, margined, entire: fls. white or orange, borne in 

 racemes, umbels or singly ; corolla 5-fid, wheel- to sal- 

 ver shaped, crowned at the throat and between the lobes 

 with 5 roundish appendages (staminodia) : berry 

 leathery, several-seeded. In the allied genus Theo- 

 phrasta the corolla is cylidrical. shortly 5-lobed, the ap- 

 pendages are fastened at the base of the corolla instead 

 of the throat, and the berry is many-seeded. 



armillaris, Linn. Lvs. cuneate-spatulate or obovate, 

 blunt, re volute at the margin, usually whorled, 4 in. 

 long, 1% in. wide: berry % in. thick. W. Indies. 



JAMBOLAN and JAMBOS. See Eugenia. 



JAMESIA (after its discoverer, Dr. Edwin James, 

 1797-1801, botanical explorer of the Rocky Mountains). 

 Syn., Edwinia, Saxifragdcece. Low, hardy shrub of up- 

 right habit, with deciduous, opposite, petioled, serrate 

 Ivs., and white fls. in terminal, short panicles. Hand- 

 some shrub for borders of shrubberies or rocky slopes 

 in sunny situations, thriving in any well-drained garden 

 soil, best in a peaty and sandy one. Prop, by seeds or 

 by cuttings of ripened wood. One species in the Rock] 

 Mountains from Utah to New Mex. Lvs. without stij 

 ules: calyx lobes and petals 5: stamens 10: styles usi 

 ally 3: fr. a 3-celled, many-seeded, dehiscent capsule. 



Americana, Torr. & Gr. Shrub, to 4 ft. : Ivs. broadl] 

 ovate to oblong-ovate, acute, serrate, dentate, pubesce 

 or almost glabrous above, whitish tomentose beneatl 

 %-2 in. long: fls. about % in- across, white, sometime 

 pinkish outside. June. B.M. 6142. J.H. III. 32:37 

 Gn. 32, p. 522, and 33, p. 606. ALFRED REHDER. 



JAMESTOWN WEED is Datura Stramonium. 

 JAMROSODE. See Eugenia Jambos. 



JAPONICA. Popular name for Cydonia Japonic 

 and Camellia Japonica. 



JARRAHt Eucalyptus marginata. 



JASIONE (ancient name of no application to thi 

 plant). Campanuldcece. This includes the Shepherd's 

 Scabious, a hardy herbaceous perennial plant of com- 

 pact habit, about a foot high, and bearing globose heads 

 2 inches in diameter, composed of very many light blue 

 flowers. It is of easy culture in any garden soil, grows 

 either in full sunlight or partial shade, and is equally 

 adapted for borders, edgings, or the rockery. The 

 common annual Scabious belongs to the teasel family, 

 and has 4 stamens, while the Shepherd's Scabious has 

 5 stamens. Jasione has about 12 species, mostly Euro- 

 pean, and is easily distinguished from its allies by the 

 fls. being borne in a head with an involucre, the corolla 

 cut into 5 awl-shaped strips, and the anthers somewhat 

 united at their bases. They differ widely in duration 

 and habit. Prop, by division and seed. 



per6nnis, Lam. SHEPHERD'S SCABIOUS. SHEEP 

 SCABIOUS. SHEEP'S-BIT. Stem erect, sparingly if at 

 all branched : root-lvs. obovate, in the non-floriferous 

 plants forming a tufted rosette; stem-lvs. oblong-linear, 

 entire: peduncles long, leafless: bracts ovate, serrate- 

 dentate. July, Aug. B.R. 6:505. B.M. 2198. 



J. B. KELLER and W. M. 



JASMINUM (Arabic name). Oledcece. JASMINE. 

 JESSAMINE. Climbing or erect shrubs, of more than 100 

 species in warm regions of the Old World. Fls. fra- 

 grant; corolla yellow or white (sometimes reddish out- 

 side), salver-shaped, the 4-9 lobes convolute in the bud, 

 much exceeding the calyx; stamens 2, included in the 

 corolla tube: ovary 2-loculed, with a single erect ovule 

 in each locule, becoming in fr. a twin berry: Ivs. pin- 

 nate, but sometimes reduced to 1 1ft. (petiole jointed). 

 Jasmines are of diverse horticultural groups. Some of 

 them are hardy in the middle and southern states, 

 whereas others are winter-flowering warmhouse plants. 

 Most of them are known as coolhouse or temperate- 

 house shrubs, of half-climbing habit. They are all of 



