BORAGINE.E. XXXVIII. COLDZXIA. XXXIX. HALGAMA. XL. PRESLEA. XLI. ECPLOCA. XLII. TOURSEFORTIA. 365 



6 T. MOXOSTA'CHYUM (Cham, in Linnaea, 4. p. 455. under 

 Heliotropium) ; this species is very nearly allied to T. heliotro- 

 pioidfs, but differs in the spikes being simple and solitary, never 

 twin ; and in the leaves not being so opposite ; stem dichoto- 

 roous ; strigae adpressed. Tj . S. Native of tropical Brazil. 

 Leaves with the petioles, 4 i-J inches long, and 1 5 lines broad. 

 Spikes half a foot long. 



One-spiked Tiaridium. Shrub J to \\ foot. 



Cult. The three first species being annuals, the seeds of them 

 should be sown on a hot-bed early in spring ; and the plants 

 may be planted out in the open border, in a warm, dry, shel- 

 tered situation, about the middle of May. The rest should be 

 treated in the manner recommended for the shrubby species of 

 Heliotropium. 



XXXVIII. COLDENIA (named by Linnaeus in honour of 

 Conwallades Golden, a North American botanist, who disco- 

 vered many new plants; these are published in the Upsal Acts 

 for 1743.) Lin. gen. no. 173. Schreb. gen. no. 233. Juss. 

 gen. 130. edit. Usteri, p. 145. Lam. ill. no. 248. t. 89. Gaertn. 

 t'ruct. 1. no. 424. t. 68. f. 3. Lehra. asper. p. 7. Tiquilia, 

 Pers. ench. 1. p. 57. 



Lix. SYST. Pentdndria, Monogynia. Calyx 5-parted. Co- 

 rolla funnel-shaped ; throat wide, naked ; limb flat ; segments 

 equal. Style bifid at apex. Carpels 4, 1 -celled, convex out- 

 side, coherent, closed at the base, beaked, without any manifest 

 receptacle. Prostrate plants, with alternate leaves, and axillary 

 flowers. 



1 C. PROCU'MBESS (Lin. fl. zeyl. p. 69. spec. p. 182.) leaves 

 cuneiform, petiolate, having one of the sides shorter than- the 

 other, coarsely serrated, plicate ; flowers axillary, usually soli- 

 tary ; carpels wrinkled. Q. S. Native of the East Indies. 

 Willd. spec. 1. p. 712. Lehm. asper. p. 8. Lam. ill. t. 89. 

 Plukn. aim. t. 64. f. 6. Stem villous. Leaves 5 to 1 inch 

 long, beset with adpressed hairs above, except in the plicae, vil- 

 lous beneath. Flowers supra-axillary, sessile, white. 



Procumbent Coldenia. Fl. July, A'ug. Clt. 1699. PI. pro- 

 cumbent. 



2 C. DICHOTOMA (Lehm. asper. p. 9.) leaves lanceolate, attenu- 

 ated at the base, lined, hoary; flowers crowded; carpels smooth. 

 I? . S. Native of Peru, in sandy places about Lima. Lithos- 



permum dichotomum, Ruiz, et Pav. fl. per. 2. p. 5. t. 3. f. c. 

 Tiquilia dichotoma, Pers. ench. 1. p. 157. Plant hispid, hoary. 

 Stems dichotomous, geniculate, hispid at top. Leaves rather 

 plicate, pilose, with reflexed, subrepand margins. Flowers ses- 

 sile, axillary, violaceous ; segments of the limb emarginate. 



Dichotomous Coldenia. Shrub procumbent. 



Cult. For culture and propagation see Tiaridium above. 



XXXIX. HALGA'NIA (named by Gaudichaud after Admi- 

 ral Halgan, of the French navy.) Gaud, in Freyc. voy. pt. bot. 

 p. 448. t. 59. 



Lix. SYST. Pentdndria, Monogynia. Calyx 5-cleft, regular. 

 Corolla funnel-shaped ; tube short ; segments spreading, obtuse. 

 Stamens inclosed ; anthers erect, fixed by the base, where they 

 are cordate and cohering, drawn out each into a linear appen- 

 dage at apex. Style longer than the stamens ; stigma simple, 

 obtuse. Fruit obliquely and tetragonally ovate, coriaceous, bi- 

 partible ; divisions 2-celled ; cells 1-seeded ; premature seeds 

 linear-renifonn, suspended towards the middle of the inner 

 parietes -of the cell. A branched, pilose shrub. Branches scat- 

 tered. Leaves scattered, lanceolate, cuneated, a little toothed, 

 3-lobed at apex, and sometimes entire. Corymbs terminal, 

 bractless. Flowers blue. 



1 H. LITTORA'LIS (Gaud. 1. c. p. 449.) Tj . G. Native of 

 New Holland, on the western coast, along the shore in Share's 

 Bay. 



Sea-shore Halgania. Shrub. 



Cult. For culture and propagation see Heliotrbpium, p. 364. 



XL. PRESL.ITA (named after J. and C. B. Presl, of 

 Prajue, brothers, experienced naturalists.) Mart. bras. 2. p. 

 75. t. 164. 



LIN. SYST. Pentandria, Monogynia. Calyx 5-parted. Co- 

 rolla funnel-shaped ; limb 5-cleft, with a plica between each of 

 the segments, which are falcate and bent inwards ; throat fur- 

 nished with 5 fascicles of pili just above the connivent anthers. 

 Anthers appendiculate at the base. Style from the top of the 

 ovarium ; stigma from a conical disk. Fruit dry, divisible into 

 4 1-seeded parts or carpels. A branched diffuse herb, with the 

 habit of Lithospermum orientale, clothed with simple hairs. 

 Leaves alternate, lanceolate. Flowers axillary, solitary, on short 

 pedicels. Corollas yellow. Perhaps LithotpSrmum Orientale is 

 a species of PresLs'a. 



1 P. PARADOXA (Mart. 1. c. p. 76.) stem much branched, dif- 

 fuse, hoary and hispid ; leaves narrow-lanceolate, acute. If. . 

 G. Native of Brazil, in the province of Bahia, on the sandy 

 banks of the river St. Francisco, near Joazeiro. Ovarium 

 ovate. Carpels perforated at the base, fixed to the central 

 column ? cohering. 



Paradoxical Preslaea. PI. diffuse. 



Cult. For culture and propagation see Heliotropium, p. 364. 



XLI. EU'PLOCA (from ev, eu, well ; and *Xr, piece, to 

 fold ; in reference to the peculiar character of the corolla.) 

 Nutt. in amer. phil. trans, n. s. 5. p. 189. 



LIN. SYST. Pentdndria, Monogynia. Calyx 5-parted. Co- 

 rolla funnel-shaped ; limb flat, plicate, 5-angled ; throat naked. 

 Genitals inclosed. Stigma annular, bearded at apex. Carpels 4, 

 approximate, by pairs, angular, imperforated at the base, oblique, 

 fixed to the calyx. Herbaceous. Leaves rough, alternate. 

 Flowers scattered, with a plicate limb, as in Contolculacece. 

 Said by Nuttall to be allied to Meuerschmidtia and Arguzia. 

 but the fruit is different. 



1 E. COXVOLVULA'CEA (Nutt. 1. c. p. 190.) Q. H. Native 

 of North America, on the sandy banks of the Arkansas. Stem 

 angular, 4-6 inches high. Leaves scabrous from adpressed 

 hairs : lower ones alternate. Flowers lateral, approximating, 

 and nearly sessile. Corolla rough, pilose outside, size of those 

 of Qudmoflit culgarit. Perhaps this plant ought to be united 

 with Tournefortia Arguzia of Siberia. 



Convoltulaceous-Rowered Euploca. PI. -| foot. 



Cult. For culture and propagation see Tiaridium above. 



XLII. TOURNEFO'RTIA (so named by Linnaeus in me- 

 mory of Joseph Pitton de Tournefort, the famous author of an 

 elegant arrangement of plants, under the title of" Institutiones 

 ReF Herbariae," 1694, 8vo. and 1700, in 3 vols. 4to. with 

 figures of all the genera then known ; also author of " Corolla- 

 rium Inst." &c. 1793 ; " Catalogue of the Plants about Paris," 

 1698; "Relation d' un Voyage du Levant," 1717, &c. The 

 first-mentioned work is the foundation of the arrangement now 

 followed, called the Jussieuan, or Natural System.) Lin. gen. 

 no. 192. Schreb. gen. no. 253. Gaertn. fruct. 1. p. 365. t.~7G. 

 Juss. gen. 129. R. Br. prod. 490. H. B. et Kunth, nov. gen. 



