130 ON SOUTH-AMERICAN APOCYNACEJE. 
3. MacrosIPHONIA LONGIFLORA, Müll. Z. c. p. 140, tab. 43: Echites longiflora, Desf. Mém. Mus. v. 275, 
tab. 20; St.-Hil. Mém. Mus. xii. 324; Stadelm. Bot. Zeit. 1841, Beibl. 64; A. DC. 7. c. p. 471; 
Echites grandiflora, Hook. Arn. (in parte), Jo. Bot. i. 286: Echites augusta, Vell. Flo. Flum, 114, 
Icon. iii. tab. 48. In Brasilia, confinibus prov. Rio de Janeiro, S. Paulo, et Minas: v. s. in herb. 
meo, Minas Geraés (Claussen). 
This species has a thick rootstock, bearing several erect, simple, woolly, fistulous 
stems, 12-15 in. high, sometimes with 2 opposite lateral branches 6 in. long, with 
smaller leaves; axils 3-1 in. apart; opposite leaves subimbricate, lanceolate-oblong, 
subcordate at the base, gradually acuminate, chartaceous, with undulated reflexed 
margins, opake and almost glabrous above, sulcate along the midrib, nerves, and veins, 
densely covered beneath with yellowish soft tomentum, 1-13 in. long, 5-9 lines broad, 
on woolly petioles 4 line long; peduncle simple, nearly terminal, 6-12 in. long, pubes- 
cent, or reddish and subglabrous, bearing 2 flowers at the apex 2 in. apart (or sometimes 
only a single flower), on pedicels 3 lines long, furnished below with 3 linear bracts 3-6 
lines long; sepals very narrow, very acuminate, or setaceous at the reflected apex; tube 
of corolla slender, cano-tomentous, 5-6 in. long, swelling in a campanular form for } of 
its length; segments obliquely roundish, 1} in. long and broad, with erispate margins, 
border when expanded 2% in. in diameter; the 2 erect, subtorulose, lanate follicles are 
73 in. long; seeds compressed, linear oblong, 5 lines long, apical coma 9 lines long. 
4. Macrosrpnonta Marti, Müll. /. c. p. 188: Echites virescens, Stadelm. (non St.-Hil.), Bot. Zeit. 
1841, Beibl. 63. In Brasilia: v. s. in herb. meo, prov. Goyaz (Gardner 3312). 
The stem is erect, 2 feet high, including the flowers, all covered with white soft hairs, 
the axils being 6-9 lines apart; the leaves are opposite, nearly erect, and subimbricate, 
oblong, obtusely acute, subcordate at the base, chartaceous, the margins crenately revo- 
lute, above darkish green, opake, convex between the sulcate immersed nerves and 
transverse veins, shortly and sparsely pilose, densely covered beneath with white woolly 
tomentum, midrib reddish, nerves immersed, 14-21 in. long, 8-101 lines broad, on 
petioles 4-1 line long; peduncle terminal, erect, sparsely clothed with reddish tomentum, 
7 in. long, bearing above from 3 to 5 suberect flowers, on pedicels 3 lines long, 1 in. apart, 
with 3 subsetaceous bracts 6 lines long; sepals very narrow, subulate, subreflexed at the 
apex, 7 lines long; tube of corolla slender, 3 in. long, swelling for } its length in the mouth 
in a cylindrical form, covered with whitish pubescence; segments obovate, for the most 
part glabrous, but tomentous at their base, the margins crispately crenate; follicles 
6 in. long; seeds 54 lines long, with an apical coma of the same length. 
The species differs from M. longiflora only in a terminal, stouter, longer, 5-flowered 
peduncle, the mouth of the shorter tube of the corolla being swollen in a narrower and 
more tubular form. 
5. MACROSIPHONIA virescens, Müll. Z. c. p. 139: Echites virescens, St.-Hil. Bull. Soc. Philom. 1824, 
p. 77; Mém. Mus. xii. 324; A. DC. l c. p. 472 (in parte). In Brasilia ad Campos Geraés, prov. 
S. Paulo: non vidi. 
Stem erect, subsimple, densely covered with ferruginous curling tomentum, bare of 
leaves upwards; leaves opposite, lanceolate, shortly acuminate, subcordate at the base, 
