1714 



JACKSONIA 



JACOBINIA 



very minute scales at the nodes: fls. yellow, or yellow 

 and purple, in terminal or lateral racemes or spikes, or 

 scattered along the branches: bracts small, scale-like. 

 About 40 species, principally in W. Austral. Jack- 

 sonias are rarely seen in cult. They thrive in loam and 

 peat soil. Prop, by cuttings from half -ripened shoots, 

 rooted in sand, during April. J. sericea, Benth. A 

 large shrub, decumbent, ascending or tall, with pendu- 

 lous branches: fls. solitary or in irregular, terminal, 

 loose racemes; calyx-lobes linear, about as long as the 

 corolla. W. Austral. L, jj. B. 



JACOB JfeA: Senecio. 



JACOBINIA (probably a personal name). Including 

 Cyrtanthera, Libonia, Sericographis, Sericobonia. Acan- 

 thacese. Plants cultivated under glass for their narrow- 

 tubular red, orange or yellow flowers. 



Glabrous herbs, or sometimes shrubs: Ivs. opposite 

 and entire: fls. variously disposed, sometimes solitary, 

 sometimes fascicled or spicate; calyx deeply 5-parted, 

 with linear or awl-shaped segms.; corolla more or less 

 2-lipped, 1 lip 2-lobed and the other 3-lobed; stamens 

 2; staminodia represented by 2 hairy elevations on the 

 corolla-tube; disk ring-like or cupulate; pistil ripening 

 into an oblong or ovate caps., the style filiform. Spe- 

 cies 20-40, depending in part on the definition of the 

 genus, from Mex. to Bolivia and Brazil. 



Jacobinias, in common with other acanthads, are 

 much confused as to species. A closely allied genus is 

 Justicia, which, among other characters, is distinguished 

 by having spurs or appendages at the base of the anther- 

 lobes, whereas Jacobinia has no such appendages. 

 Most of the garden plants called Justicias are Jacobin- 

 ias. Other allied genera are Aphelandra, Dianthera, 

 Adhatoda, Thyrsacanthus, Eranthemum, Barleria, 

 Dsdalacanthus. 



2005. Jacobinia carnea. ( X 1 A) 



In their native places, Jacobinias are mostly sub- 

 shrubs, but they are usually treated as herbs under culti- 

 vation. They are showy greenhouse or conservatory 

 subjects. When well grown they are attractive plants, 

 but they soon become weedy under neglect. They 

 propagate very readily from cuttings, after the manner 

 of fuchsias, and the most satisfactory plants are usually 

 those that are allowed to bloom but once. Most of 

 them thrive well under conditions suited to begonias. 



A. Fls. in a more or less dense terminal panicle or thryse; 

 corolla long, more or less curved. (Subgenera 

 Cyrtanthera, Pachystachys.) 



carnea, Nichols. (Justicia cdrnea, Hook. Cyrtan- 

 thera magnifica, Nees. Justicia magnifica, Pohl. Jaco- 

 binia magnifica, Benth. & Hook.). Fig. 2005. Strong 

 forking herb or subshrub, blooming when 1 or 2 ft. high, 

 but becoming several feet high if allowed to grow: sts. 

 4-angled: Ivs. opposite, lanceolate to ovate-lanceolate 

 to oval-oblong, narrow or broad at base, attenuate to 

 apex, wavy-margined, veiny, downy, sometimes a 

 foot long: fls. rose-purple (varying to flesh-colored); 

 ascending, arched at the top and the lower lip recurv- 

 ing, borne in dense terminal spike-like thyrses. Brazil 

 B.M. 3383. B.R. 1397. G.F. 5:317 (reduced in Fig. 

 2005). G. 24:238. G.W. 3, p. 439; 15, p. 704. F.E. 

 22:320. A handsome old plant, of comparatively 

 easy cult, in a conservatory temperature. Cuttings 

 made in Feb. or March should bloom early the follow- 

 ing winter. Young plants are usually most satisfac- 

 tory, the old ones being kept over only for cutting 

 stock. Give rich soil, and plenty of water in the growing 

 season. This plant is said to have been distributed as 

 Whitfieldia lateritia. 



Pohliana, Benth. & Hook. (Cyrtanthera Pohlidna, 

 Nees). Much like J. magnifica,, but more robust and 

 leafy: Ivs. ovate-acuminate and rounded or nearly or 

 quite cordate at the base, more glabrous, often purple- 

 tinged: fls. bright crimson: bracts short-acute, or in 

 one form obtuse. Brazil. G. 27:677. F.S.R. 3, p. 49. 

 Var. veltitina, Hort. (J. velutina and Justicia velu- 

 tina, Hort. Cyrtanthera Pohliana var. velutina, Nees). 

 Dwarf: bracts obtuse: Ivs. villous- 

 pubescent on both surfaces: fls. 2 

 in. long, rose-color. Brazil. Gng. 

 7:212; 16:24. A.F. 14:998. A 

 worthy plant of comparatively re- 

 cent intro. in commerce. It is an 

 excellent pot subject and has been 

 considerably advertised as the "new 

 dwarf Justicia velutina." A profuse 

 and continuous bloomer. Cultural 

 remarks under J. carnea apply also 

 to this. 



coccinea, Hiern. (Justicia coc- 

 dnea, Aubl. ) . Erect herb or subshrub, 

 usually grown from cuttings each 

 year and treated as a pot subject: 

 2-5 ft. high: branches terete: Ivs. 

 elliptic or ovate-lanceolate, entire, 

 glabrous or nearly so: fls. crimson, 

 in a dense terminal spike, pubes- 

 cent, the long upper lip more or less 

 arched and the lower one reflexed. 

 Brazil. B.M. 432. G.W. 15, p. 704. 

 Gn.W. 21:57. Blooms in summer. 

 Said to be known sometimes as 

 Aphelandra cristata. 



chrysostephana, Benth. & Hook. 

 (Cyrtanthera chrysostephana, Hook, 

 f.) Herbaceous, glabrous or very 

 nearly so, obtusely 4-angled: Ivs. 

 5-6 in. long, petioled, ovate or 

 ovate-lanceolate, acuminate, with 

 red ribs: fls. in an erect terminal 



