LOBELIACE>E. X. PARASTRANTHUS. XI. ISOTOMA. XII. HOLOSTIGMA. XIII. LYSIPOMIA. 



716 



grown for a time, if planted in a pot of gravel, and placed in a 

 pond or cistern, so that the plants may be about 6 inches below 

 the surface of the water ; and D. paludbsa may be grown in a 

 pot half filled with peat earth, and the other half with sphagnum, 

 in which the plants are to be set, and the pot placed in a shallow 

 pan of water, or in a cistern or pond, but not so deep as to 

 immerse the plants. 



X. PARASTRA'NTHUS (from 7rapa<rrp0w, parastrepho, to 

 invert, or to distort, and avdos, anthos, a flower ; the flowers are 

 upside down, compared with those of other genera of Loleliacece). 

 Lobelia species, Lin. Thunb. 



LIN. SYST. Pentdndria, Monogy'nia. Calyx S-cleft. Corolla 

 bilabiate, with hardly any tube : upper lip of 3 segments, lower 

 one of 2 segments, smaller. Stamineous column under the lower 

 lip. Anthers and filaments connected into a column ; the 

 former bearded at the apex. Ovarium inferior, 2-3-celled. 

 Stigma bifid or trifid. Herbaceous plants, with toothed leaves, 

 and terminal racemes of almost sessile yellow flowers. 



1 P. SI'MPLEX ; glabrous ; stems assurgent, simple ; leaves 

 lanceolate, serrated ; flowers almost sessile, at the tops of the 

 stems, forming a loose spike ; bracteas toothed, shorter than the 

 calycine segments. %.. H. Native of the Cape of Good Hope. 

 Lobelia lutea, Lin. spec. 1322. Sims, bot. mag. t. 1319. Burm. 

 afr. p. 101. t. 39. Flowers deep yellow. 



Simple-stemmed Yellow-Lobelia. Fl. June, July. Clt. 1774. 

 PI. i foot. 



2 P. VARIIFOLIA ; stems erectish, branched at top ; leaves 

 linear, quite entire, and toothed, particularly the upper ones ; 

 flowers solitary, axillary, nearly terminal, almost sessile ; 

 stigma tripartite. I/ . H. Native of the Cape of Good 

 Hope. Lobelia variif61ia, Sims, bot. mag. 1692. Flowers 

 yellow. 



Various-leaved Yellow-Lobelia. Fl. June, July. Clt. 1812. 

 PI. J to 1 foot. 



3 P. UNIDENTA'TA ; leaves linear-lanceolate, furnished with a 

 tooth on each side, rather hairy above, and discoloured beneath; 

 pedicels solitary, terminal ; stems angular from the decurrent 

 bases of the leaves, y.. G. Native of the Cape of Good 

 Hope. Lobelia unidentata, Ait. hort. kew. ed. 2. 1. p. 356. 

 Sims, bot. mag. t. 1484. L. bidentata, Bonn, hort. cant. ed. 

 4. p. 41. Flowers deep blue. Anthers yellow. Stigma 2- 

 lobed. 



Unidentate-\e3ived Parastranthus. Fl. May, Aug. Clt. 1794. 

 PI. foot. 



Cult. Beautiful plants, of easy culture. A mixture of loam, 

 peat, and sand is the best soil for them ; and they are easily 

 increased by dividing at the root. 



XI. ISO'TOMA (from to-oe, isos, equal, and ro/ut, toma, a 

 section ; in reference to the segments of the corolla being nearly 

 equal.) Lindl. bot. reg. 964. Lobelia Isotoma, R. Br. prod, 

 fl. nov. boll. p. 564. 



LIN. SYST. Pentdndria, Monogynia. Limb of calyx 5-parted 

 (f. 122. c.), nearly equal. Corolla salver-shaped (f. 122. d.) or 

 funnel-shaped, with an entire or cleft tube, and a nearly equal 

 5-parted limb. Filaments combined into a tube. Anthers co- 

 hering, beardless ; two lower ones mucronate. Stigma capitate, 

 protruding beyond the anthers. Capsule 2-celled, many-seeded. 

 Herbaceous plants. This genus differs from all the other 

 genera of Lobeliaceous plants, in the 2 lower anthers being 

 mucronate, except Pratia. 



1 I. AXILLA RIS (Lindl. bot. reg. 964.) plant rather downy; 

 leaves sessile, pinnatifid, toothed ; peduncles axillary, naked, 



FIG. 122. 



elongated, 1 -flowered ; corolla 

 salver-shaped, with an entire 

 tube. I/ . G. Native of New 

 Holland, on the south coast. 

 L. senecioides, Cunningh. L. 

 senecionis, Spreng. syst. add. 

 p. 75. Corolla with green tube, 

 and light blue linear-lanceolate 

 segments. The segments of the 

 calyx are narrow, distant, and 

 at length reflexed. (f. 122.). 



Axillary - flowered Isotoma. 

 Fl. July, Sept. Clt. 1824. PI. 

 1 foot. 



2 I. BRO'WNII ; glabrous ; 

 stems almost simple ; leaves li- 

 near, quite entire; corolla salver- 

 shaped, with an entire tube, 



and a somewhat unequal limb ; flowers racemose. Q. H. Na- 

 tive of New Holland, on the south coast. Lobelia hypocrateri- 

 formis, R. Br. prod. 564. Hook. bot. mag. t. 3075. Flowers 

 beautiful purple. 



Browns Isotoma. Fl. Sept. Clt. 1829. PI. 1 foot. 



3 I. SCAPI'GERA ; stems short ; leaves lanceolate, a little 

 toothed ; corolla funnel-shaped, having the tube cleft above at 

 the apex ; peduncles scape-formed, 1-flowered. 1.G. Native 

 of New Holland, on the south coast. Lobelia scapigera, R. Br. 

 prod. p. 564. Flowers blue or purple. 



Var. a, biuncialis (R. Br. 1. c.) stem 6-10 lines long ; leaves 

 ovate-lanceolate, 4-6 lines long ; scapes many, 2-3 inches long. 

 l/.G. 



Var. ft, pmilla (R. Br. 1. c.) stems almost wanting ; leaves 

 ovate, obtuse, 2 lines long ; scapes almost solitary, 3-8 lines long. 



V.G. 



Scape-bearing Isotoma. PI. 1 to 3 inch. 



Cult. The species of this genus are very elegant while in 

 blossom, and are of easy culture. A light soil suits them best ; 

 and they are easily increased by cuttings or seeds. They answer 

 well if planted out during summer in the open border, with a 

 south aspect. 



XII. HOLOSTrGMA (from oXoc, holos, entire, and any^a, 

 stigma, a stigma ; in reference to the entire stigma). Lobelia, 

 Sect. III. R. Br. prod. p. 564. 



LIN. SYST. Dioecia, Pentdndria. Flowers dioecious. Limb 

 of calyx 5-parted. Corolla having the tube cleft above, and a 

 nearly equal 5-lobed limb. Anthers cohering, bearded. Stigma 

 undivided. Capsule 2-celled, many-seeded. A herbaceous 

 plant. 



1 H. DioicA ; male flowers corymbose and terminal ; female 

 ones axillary and solitary ; cauline leaves lanceolate, toothed or 

 entire. "U. . G. Native of New Holland, within the tropic, on 

 the shore. Flowers blue. ? 



.Dioecious-flowered Holostigma. PI. ? 



Cult. See Isotoma above for culture and propagation. 



XIII. LYSIPO'MIA (from \vta, luo, to solve, and vwfta, 

 poma, a lid ; in reference to the capsule, which opens by an 

 operculum at the apex). H. B. et Kunth, nov. gen. amer. 3. 

 p. 318. 



LIN. SYST. Pentdndria, Monogynia. Limb of calyx 5-parted. 

 Corolla with a campanulate entire tube, and a 5-parted sub-bila- 

 biate limb ; the 2 lobes of the upper lip a little longer than those 

 of the lower lip : lobes valvate in aestivation. Anthers coher- 

 ing ; the 2 inferior ones a little shorter than the rest, bearded at 



