LABIATZE. II. Gentosrorum. III. Mesona. IV. AcnocEPHALUs. V. Moscnosma. 
92.? Much branched. Leaves i to 1 inch long. Whorls 
10-20-flowered. Corollas minute. Stamens exserted a little. 
Prostrate Geniosporum. Fl. July, Aug. Clt. 1783. Pl. 
prostrate. 
7 G. tuymiroLium (Benth. lab. p. 21.) stem herbaceous, 
procumbent at the base, pubescent; leaves sessile, ovate, ob- 
tuse, crenated: floral ones conform, smaller: upper ones and 
bracteas white and cartilaginous; whorls distant; calyxes 
nearly sessile, irregularly bilabiate: superior lip ovate, entire, 
or toothed on both sides at the base: lower lip entire, or bifid. 
—Native of Madagascar. Stamens a little exserted. Leaves 3 
an inch long. 
Thyme-leaved Geniosporum. | Pl. prostrate. 
Sect. II. PrarósrouaA (from zAarvc, platys, wide; and oropa, 
stoma, a mouth; calyx.) Benth. lab. p. 22. Calycine teeth 
combined into two almost entire lips. 
8 G. Parısòrı (Benth. lab. p. 22.) stem erect, pubescent ; 
leaves petiolate, ovate, cuneately rounded at the base: floral 
ones hardly longer than the whorls of flowers; raceme slender ; 
lips of calyx membranous, nearly entire. ©. S. Native of 
Guinea, and Congo.  Platóstoma Africànum, Beauv. fl. d'ow. 2. 
p. 61. t. 95. f. 2. O'cymum sylvàticum, Schum. pl. guin. in 
act, acad. hafn. 4. p. 44. Flowers small. 
Palisot de Beauvois's Geniosporum. Pl. 1 foot.? 
Cult. For culture and propagation see O'cymum, p. 674. 
III MESO'NA (from peoog, mesos, middle; so called be- 
cause the genus was supposed by the author to be interme- 
diate between the genus O'cymum and Scutellaria.) Blum: bijdr. 
p. 888. Benth. lab. p. 22. 
Lin. syst. Didynamia, Gymnospérmia. Calyx bilabiate: 
upper lip divided: lower one small, at length inflexed. Upper 
lip of corolla arched: lower one longer, undivided. Stamens 
didynamous, declinate; of these the two shorter are appendicu- 
late at the base; anthers l-celled, beardless. A genus inter- 
mediate between O'cymum and Scutellaria, ex Blum. l. c. This 
genus is nearly allied to Geniósporum, but differs in the shorter 
stamens being appendiculate at the base; and from O'cymum 
in the superior lip of calyx being divided, and in the inflores- 
cence, ex Benth. 
1 M. patv’srris (Blum.l. c.) 2t.? S. Native of Java, in 
marshes about Buitenzorg. Herb scentless. Leaves ovate- 
oblong, toothed, wrinkled, rather pilose. Flowers densely and 
verticillately spiked ; whorls bracteate; pedicles fascicled. 
Marsh Mesona. Pl. 
Cult. For culture and propagation see O'cymum, p. 674. 
IV. ACROCEPHALUS (from axpoc, akros, the highest ; 
and Kepan, kephale, a head; in allusion to the flowers being 
disposed in small, dense, terminal, imbricate heads.) Benth. in 
bot. reg. vol. 15. lab. p. 23. — O'cymum species, Lin. and 
other authors. 
Lin. syst. Didynamia, Gymnospérmia. Calyx ovate in the 
floriferous state, but elongated in the fructiferous state, tubular, 
gibbous at the base, bilabiate : upper lip entire, flattish: lower 
lip entire, or 4-toothed; throat naked inside. Corolla about 
equal in height to the calyx, sub-bilabiate : upper lip 4-toothed : 
` lower one entire; lobes all nearly equal. Stamens 4, declinate ; 
filaments free, toothless; anthers ovate-reniform, with confluent 
cells. Style shortly bifid at apex ; lower lobe a little dilated, 
flattened; stigmas submarginal. Achenia glabrous, smooth.— 
Herbs. Flowers small, disposed in densely imbricate, terminal, 
almost globose heads. This genus differs from O'cymum, Geniós- 
porum and Moschésma by the form of the calyx, and more espe- 
675 
cially by the inflorescence. The form of the corolla distinguishes 
it from all other genera of the tribe Ocymoidee. 
1 A. carıra`rus (Benth. in Wall. pl. rar. 2. p. 18. lab. p. 23.) 
stem procumbent, and are, as well as the leaves, which are ovate, 
nearly glabrous ; lower lip of calyx 4-toothed. ©. S. Native 
of the East Indies, China, &c. Lumnitzera capitàta, Spreng. 
syst. 2. p. 687. O’cymum capitatum, Roth, nov. spec. 276. 
O'eymum capitellatum, Lin. mant. 276. Prunélla Indica, 
Burm. fl. ind. p. 130. Branches glabrous, or with a pilose line 
on each side. Leaves petiolate, oblong-ovate, remotely ser- 
rated: floral ones 2-4 under each head, and longer than it, 
sessile. Heads ovate, pedunculate, or sessile. 
Capitate-flowered Acrocephalus. Fl. July, Aug. Clt. 1806. 
Pl. procumbent. 
2 A. Buu'mur (Benth. lab. p. 23.) stem diffuse, tetragonal ; 
leaves linear-lanceolate, coarsely serrated ; flowers densely capi- 
tate, terminal, girded by ovate, nerved bracteas. (2. S. Na- 
tive of Java, in grassy humid places about Rompien. O’cymum 
acrocéphalum, Blum. bijdr. p. 834. 
Blume’s Acrocephalus. PI. diffuse. 
8 A. virLósus (Benth. lab. p. 23.) stem erect, and is, as well 
as the leaves, hairy ; lower lip of calyx quite entire. ©. S. 
Native of Madagascar. Stem tetragonal, often glandular, as 
well as the under sides of the leaves. Floral leaves 2-4 under 
each head. 
Villous Acrocephalus. PI. 1 foot. 
Cult. For culture and propagation see O'cymum, p. 674. 
V. MOSCHO'SMA (from goexoc, moschos, musk; and 
ocun, osme, a smell; plant exhaling a smell like that of musk.) 
Rchb. consp. reg. veg. p. 171. Lumnitzera, Jacq. fil. ecl. 2. 
but not of Willd.—O'cymum species, Lin. and other authors. 
Lin. syst. Didynamia, Gymnospérmia. Calyx ovate, 5- 
toothed: upper tooth the largest, with the margins not decur- 
rent: lower teeth nearly equal, and somewhat declinate after 
florescence ; throat naked inside. Corolla with an inclosed 
tube, and a sub-bilabiate limb; upper lip shortly quadrifid: 
lower one quite entire, flattish; lobes all nearly equal. Sta- 
mens 4, declinate; filaments free, toothless; anthers ovate- 
reniform, with confluent cells. Style clavately capitate, and 
shortly bifid at apex; stigmas minute. Achenia ovate, com- 
pressed, smooth. — Herbs. Whorls few-flowered, secund, 
loosely racemose ; racemes axillary, subpanicled. The clavate 
style and form of the calyx separates this genus from the pre- 
ceding genera. Flowers very minute. 
1 M. potysra‘cuya (Benth. in Wall. pl. rar. asiat. 2. p. 13. 
lab. p. 24.) stem acutely tetragonal, with smooth or hardly 
rough angles; whorls 6-10-flowered. ©. S. Native of the 
East Indies; Arabia, at Senaar, Bové; tropical New Holland, 
Bauer. Lumnítzera polystàchya, Jacq. l. c. O'cymum polys- 
tachyon, Lin. mant. 567. Murr. comm. goett. nov. 3. p. 71. 
t. 3. O'cymum tenuiflórum, Burm. ind. 129. but not of Lin. 
Plectranthus parviflórus, R. Br. prod. p. 506.? Plectranthus 
micranthus, Spreng. syst. 2. p. 691. Plant branched. Leaves 
on long petioles, ovate, acutish, crenated, rounded at the base, 
glabrous, or finely downy above. Corolla minute, pale purple. 
Many-spiked Moschosma. Fl. July, Aug. Clt. 1788. PI. 
1 to 2 feet. 
2 M. Ausrra'te (Benth. lab. p. 708.) stem acutely tetrago- 
nal, with smooth angles; leaves ovate or ovate-lanceolate, pu- 
bescent; whorls loosely 6-10-flowered, distant; style bifid at 
apex. ©. S. Native of New Holland, within the tropic. 
Plectranthus moschàtus, R. Br. prod. 506. Lumnitzera mos- 
chàta, Spreng. syst. 2. p. 687. Hardly distinct from M. poly- 
stachya, except that the leaves are pubescent, the racemes 
4R2 
