364 BORAGINEZE. XXXV. Hzrrornorrux. 
corolla. Stigma bifid. Seeds 4, naked. 
Perhaps a species of Verbena. 
Tetrandrous-flowered Heliotrope. Pl. 1 foot. 
N.B. In Salt’s trav. in abys. p. 475, there are 3 species 
enumerated, but without any diagnosis. 1. H. cinéreum, R. 
Br. 2. H. ellípticum, R. Br. and H. dübium, R. Br. 
Cult. Several of the species of Heliotropium, or Turnsole, 
are valued on account of the fragrance of their blossoms, so 
that a few of them are to be met with in almost every collection 
of plants. The shrubby and perennial kinds thrive in any kind 
of rich, light soil; and young cuttings of them root readily 
under a hand-glass. The European annual species should be 
treated as other hardy annuals, by sowing the seeds in the 
open ground : the tropical species, like other tender annuals, by 
being reared on a hot-bed, and afterwards planted out. 
Calyx small, 5-cleft. 
XXXVI. PIPTOCLA NA (from sro, pipto, to fall; and 
kava, klaina, a cloak ; in reference to the calyx being decidu- 
ous.) Heliotrópium, species of authors. 
Lin. syst. — Pentándria, Monogynia. Calyx tubular, 5- 
toothed, deciduous, ^ Corolla salver-shaped ; throat furnished 
with a tooth between each of the segments. Stamens inclosed. 
Stigma simple. Carpels solitary, or 4, 1-celled.— Diffuse or 
canescent annual plants. Leaves petiolate, alternate. Flowers 
disposed in solitary, or twin spikes. 
1 S. Matasa’rica; stems herbaceous, depressed ; leaves 
ovate, plicate, entire, clothed with hoary tomentum on both 
surfaces, pilose ; spikes lateral and terminal, generally solitary ; 
calyx large, deciduous in the fruit-bearing state. ©. H. Native 
of Malabar. Heliotropium Malabáricum, Retz. obs. 4. p. 24. 
Willd. spec.1.p.742. Lehm. asper. p. 48. H. Europee‘um, Forsk. 
descr. p. 38. H. Europa'um, var. Malabáricum, Burm. ind. 
p. 40?. Plant soft to the touch. Spikes sometimes conjugate. 
Corolla white, longer than the calyx. Carpels rugose, glabrous. 
Calycine teeth short, connivent. 
Malabar Piptoclaina. Pl. trailing. 
2 S.suriwA; stems herbaceous, decumbent; leaves oval, 
obtuse, plicate, with the margins a little reflexed, and obsoletely 
crenulated, hoary beneath, villous; spikes generally solitary, 
seldom conjugate, usually lateral ; calyx closed, deciduous in 
the fruit-bearing state. ©.H. Native of Portugal, South of 
France, Islands of the Archipelago, Barbary, Arabia, and the 
Cape of Good Hope. Heliotropium supinum, Lin. spec. 187. 
Lehm. asper. p. 48. Gouan. hort. monsp. p. 17. t. 1. Desf. 
fl. atl. 1. p. 152. Sibth et Smith, fl. graec. t. 157.  Lapeyr. 
abr. suppl. 27. D. C. fl. fr. no. 2706. Thunb. fl. cap. prod. 
p. 33. Hoffm. et Link. fl. port. 1. p. 167. Heliotropium 
humifüsum, flore minore, &c. Tourn. cor. p. 7. voy. 1. p. 342. 
t. 23.— Mor. hist. 3. sect. 11. t. 31. f. 10. Stems many from 
the same root, hairy, canescent. Calycine teeth linear. Corolla 
with a yellow tube, length of the calyx, and a short white 
limb ; segments of the limb reniform, intersected by teeth, which 
hardly close the throat. Carpels scabrous, solitary, the other 3 
being abortive. 
Trailing Piptoclaina. 
trailing. 
Cult. This species of the genus being annuals, the seeds only 
require to be sown on a hot-bed in spring, and about the end of 
May the plants should be planted out in the open border, 
in a sheltered situation. 
Fl. June, July.  Clt. 1640. Pl. 
XXXVII. TIARI DIUM (from rapa, tiara, a Persian dia- 
dem; and «oc, eidos, like; in reference to the form of the 
capsule.) Lehm. asper. p. 13. Blum. bijdr. 845.— Heliotró- 
pium species of authors. 
XXXVI. PiPTOCLAINA. 
XXXVII. TiaRIDIUM. 
Liw. syst.  Pentándria, Monogynia. Calyx 5-cleft, or 5- 
parted. Corolla salver-shaped ; tube angular; throat coarc- 
tate, 5-rayed ; segments of the limb undulated. Style very 
short. Stigma capitate. Carpels 4, 2-celled, mitre-formed, acu- 
minated, cohering, closed at the base, without any manifest 
receptacle.— Plant with the habit of Heliotropium. 
1 T. Vnpicum (Lehm. asper. p. 14. Blum. bijdr. p. 846.) 
stem herbaceous, erect, hairy ; leaves ovate-cordate, acuminated, 
hairy at the base; tube of corolla twice as long as the calyx. 
©. H. Native of both Indies and North America, in rather 
dry places. Heliotropium I’ndicum, Lin. spec. 187. Swartz. 
Obs. p. 54. Willd. spec. 1. p. 740. Willd. enum. 1. p. 174. 
Pursh. fl. amer. sept. 1. p. 130. Horn. hort. hafn. 1. p. 172. 
Michx. fl. bor. amer. 1. p. 129. Sims bot. mag. t. 1837. 
Heliotropium cordifolium, Moench. meth. p. 415.—Sabb. hort. 
rom. 2. t. 34.—Mor. hist. 3. sect. 11. t. 28. f, 1.—Plukn. phyt. 
245. f. 4. Plant scabrous. Stem branched. Leaves running 
into the petioles at the base, 3 inches long, and 2 broad, sub- 
serrate. Spikes terminal, solitary, hairy, reflexed at first. 
Calycine segments rather unequal. Corolla with a white tube, 
a cream-coloured throat, and a lilac or bluish limb. In spon- 
taneous specimens of this plant the leaves are nearly opposite, 
and the spikes terminal; but in cultivated specimens the leaves 
are often alternate, and the spikes conjugate. “ Nuts 2- 
celled,” ex Cham. in Linnza. 
Indian Tiaridium. Fl. June, July. Clt. 1820. Pl. 1 to 2 
feet. 
2 T. ANIsoPHY'LLUM ; stem branched, hardly villous; leaves 
petiolate, ovate-lanceolate, glabrous, nearly entire, opposite, or 
alternate, unequal at the base; spikes solitary, terminal, and 
axillary. ©. H. Native of Guinea, on the gold coast. Helio- 
trópium anisophyllum, Beauv. fl. d'ow. 2. t. 94. Flowers white. 
Unequal-leaved Tiaridium. Fl. June, July. Clt. 1823. Pl. 
1 foot. 
3 T. veturinum (Lehm. asper. p. 15. Blum. bijdr. 846.) 
stem erect, herbaceous, villous ; branches decumbent ; leaves 
ovate, bluntish, undulated, canescent on both surfaces, velvety ; 
tube of corolla a little longer than the calyx, villous outside. 
C.H. Native of the East Indies. In Java this and T. Indi- 
cum are called Bunta-tikus. Bena-patsja, Rheed. mal. 10, p. 95. 
t. 487. Leaves opposte, petiolate, obsoletely crenulated on 
the margins, hoary from tomentum while young, running ob- 
liquely into the petioles at the base. Spikes lateral and terminal, 
pilose, solitary, revolute before florescence. 
Velvety Tiaridium. FI. June, July. Clt. 1820. Pl. 1 foot. 
4 T. rroxca ruw (Lehm. asper. p. 18.) stem suffruticose, 
decumbent; leaves rhomb-lanceolate, acuminated, hairy ; tube 
of corolla thrice as long as the calyx, hairy outside. h. G. 
Native of Brazil, in sandy places. Heliotropium elongàtum, 
Willd. herb. no. 3228. Stem woody at the base, herbaceous 
and hairy at top. Leaves tapering into the petioles at the base, 
obsoletely erenulated. Spikes lateral and terminal, solitary, 
very long, pedunculate at first, revolute. Calycine segments 
incurved. Carpels 1-celled, ex Cham. in Linnzea, 4. p. 452. 
Elongated-spiked Tiaridium. Shrub decumbent. 
5 T. nzziorRorior pzs (Cham. in Linnea, 4. p- 453.) shrubby, 
beset with adpressed pili; leaves nearly opposite and attenuate, 
broad, lanceolate, acute at both ends, strigose above, downy be- 
neath ; tube of corolla exceeding the calyx. h.G. Native of 
the South of Brazil, Sello. Heliotropium tiaridioides, Cham. 
in Linnea, 4. p. 453. Leaves 21 to 4 inches long, and 1 to 14 
broad. Spikes twin at first, terminal, bractless. Calycine seg- 
ments narrow, acute. Corolla downy outside. Stigma conical. 
Fruit divisible into two 2-celled parts. 
Heliotrope-like Tiaridium. Shrub 14 foot. 
Nec C9 
