716 LOBELIACEA. X. Parastrrantuus. 
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. paluddsa 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 zapaorpegu, parastrepho, to 
invert, or to distort, and av@oc, anthos, a flower ; the flowers are 
upside down, compared with those of other genera of Lobeliacee). 
Lobélia species, Lin. Thunb. 
Lin. syst. Pentdndria, Monogy’nia. Calyx 5-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 Jeaves, 
and terminal racemes of almost sessile yellow flowers. 
1 P. srmpLex; 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. 
Lobélia lutea, Lin. spec. 1322. Sims, bot. mag. t. 1319.—Burm. 
afr. p. 101. t. 39. Flowers deep yellow. 
Simple-stermmed Yellow-Lobelia. Fl. June, July. Clt. 1774. 
Pl. $ foot. 
2 P. variFoLiA; stems erectish, branched at top; leaves 
linear, quite entire, and toothed, particularly the upper ones; 
flowers solitary, axillary, nearly terminal, almost sessile ; 
stigma tripartite. YJ. H. Native of the Cape of Good 
Hope. Lobélia variifdlia, Sims, bot. mag. 1692. Flowers 
yellow. 
Various-leaved Yellow-Lobelia, FI. June, July. Clt. 1812. 
PI. 3 to 1 foot. 
` 3 P, untpenta‘ra; 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. 2. G. Native of the Cape of Good 
Hope. Lobélia unidentata, Ait. hort. kew. ed. 2. 1. p. 356. 
Sims, bot. mag. t. 1484. L. bidentata, Donn, hort. cant. ed. 
4. p. 41. Flowers deep blue. Anthers yellow. Stigma 2- 
lobed. 
Unidentate-leaved Parastranthus. Fl. May, Aug. Clt. 1794. 
Pi. 4 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 tcoc, isos, equal, and ropa, toma, a 
section; in reference to the segments of the corolla being nearly 
equal.) Lindl. bot. reg. 964. Lobélia Isótoma, R. Br. prod. 
fl. nov. holl, p. 564. 
Lin. syst. Penténdria, Monogynia. Limb of calyx 5-parted 
(f. 122. ¢.), 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. axıra ris (Lindl. bot. reg. 964.) plant rather downy; 
leaves sessile, pinnatifid, toothed; peduncles axillary, naked, 
XI. Isoroma. 
XII. Horostiema, XIII. Lystromia. 
elongated, 1-flowered; corolla 
salver-shaped, with an entire 
tube. Y. G. Native of New 
Holland, on the south coast. 
L. senecioides, Cunningh. L. 
senecidnis, 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. Pl. 
1 foot. 
2 I. Bro’wnn; glabrous ; 
stems almost simple; leaves li- 
near, quite entire; corolla salver- 
shaped, with an entire tube, 
and a somewhat unequal limb; flowers racemose. ©.H. Na- 
tive of New Holland, on the south coast. Lobélia hypocrateri- 
férmis, R. Br. prod. 564. Hook. bot. mag. t. 3075. Flowers 
beautiful purple. 
Brown’s Isotoma. Fl. Sept. Clt.1829. Pl. 1 foot. 
3 I. scapr'cera ; stems short; leaves lanceolate, a little 
toothed ; corolla funnel-shaped, having the tube cleft above at 
the apex; peduncles scape-formed, 1-flowered. %. G. Native 
of New Holland, on the south coast. Lobélia 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. 
Y 
FIG, 122. 
Var. P, pusilla (R. Br. l. c.) stems almost wanting ; leaves 
ovate, obtuse, 2 lines long; scapes almost solitary, 3-8 lines long. 
u.G. 
Scape-bearing Isotoma. PI. 1 to 3 inch. ones 
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. HOLOSTI’GMA (from doç, holos, entire, and areypHa, 
stigma, a stigma; in reference to the entire stigma). Lobélia, 
Sect. II. R. Br. prod. p. 564. ; 
Lin. syst. Dioècia, Pentándria. 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. pioica; male flowers corymbose and terminal; female 
ones axillary and solitary; cauline leaves lanceolate, toothed oF 
entire. %. G. Native of New Holland, within the tropic, 0n 
the shore. Flowers blue. ? 
Dioecious-flowered Holostigma. 
Cult. 
EE? 
See Zsótoma above for culture and propagation. 
XII. LYSIPO'MIA (from Ave, luo, to solve, and wpa, 
poma, a lid; in reference to the capsule, which opens by = 
operculum at the apex). H. B. et Kunth, nov. gen. amer. “ 
DARE 
p Lin. syst. Pentándria, Monogýnia. Limb of calyx sie 
Corolla with a campanulate entire tube, and a 5-parted at a 
biate limb ; the 2 lobes of the upper lip a little longer than poi 
of the lower lip: lobes valvate in estivation. Anthers a : 
ing; the 2 inferior ones a little shorter than the rest, bearded @ 
-m wee o 
