flora neotropica - CNCFlora

Systematic Treatment 83
48. Leaves 8-23 cm long, 3.3-8 cm broad, with 10-13 pairs of primary veins,
the lamina base eglandular; inflorescence gray-puberulous or brown-tomentellous.
49. Leaves subcordate at base, the lower surface glabrescent; exocarp glabrous.
40. H. elongata.
49. Leaves rounded to subcuneate at base, the lower surface sparsely pilosehirsute;
exocarp tomentose. 24. H. eriandra.
45. Inflorescence a much-branched panicle without a long central rachis; leaf base rounded to
cuneate.
50. Inflorescence and exterior of flowers tomentose, hirsute, or hispid, usually rufous to
golden-brown.
51. Inflorescence and young branches sparsely hispid; leaves membranous.
41. H. rodriguesii.
51. Inflorescence and young branches tomentose or hirsute; leaves chartaceous to
coriaceous.
52. Venation of leaves slightly impressed above; inflorescence rufous-tomentose.
42. H. obidensis.
52. Venation of leaves plane or prominulous above; inflorescence brown-tomentose
or hirsute.
53. Leaves 2.5-6 cm long; inflorescence 0.8-4 cm long.
54. Inflorescence 0.8-1.5 cm long, clustered; leaves ovate, rounded at
base; stamens 7. 43. H. cowanii.
54. Inflorescence 2-4 cm long, lax; leaves orbicular to oblong-orbicular,
usually subcordate at base; stamens 5. 44. H. orbicularis.
53. Leaves 5.5-17 cm long; inflorescence 4-11 cm long.
55. Bracts 4-6 mm long, ovate, up to half the length of receptacle; leaves
ovate, thick-coriaceous, shortly mucronate at apex; inflorescence
tomentose. 45. H. guyanensis.
55. Bracts 1-3 mm long, oblong, to base of receptacle only; leaves elliptic,
subcoriaceous, acuminate (never mucronate) at apex; inflorescence
hirsutulous-tomentose. 46. H. lightioides.
50. Inflorescence and exterior of flowers gray-puberulous to glabrescent.
56. Inflorescence a subcorymbose panicle 4-6.5 cm long; petioles 7-8 mm long.
47. H. aramangensis.
56. Inflorescence a spreading panicle (not subcorymbose); petioles 0.5-5 mm long.
57. Lamina 9-15 cm long, with distinct basal glands; inflorescence lax and spreading,
7-19 cm long.
48. H. rasa.
57. Lamina 2.5-8(-9.5) cm long, the base eglandular or with indistinct glands;
inflorescence short and compact, 1-8 cm long.
58. Inflorescence and exterior of flowers densely puberulous; leaves thick
and coriaceous, with prominent venation, the apex acuminate but never
cuspidate.
49. H. scabra.
58. Inflorescence and exterior of flowers glabrescent to puberulous; leaves
chartaceous, with plane to prominulous venation, the apex acuminate
to cuspidate.
50. H. bicornis.
Key to Hirtella Group C: Species without myrmecophilous swellings at
leaf base and with a racemose inflorescence.
1. Glands present on bracts and bracteoles or pedicels (either stipitate or sessile).
2. Leaves narrowly linear-lanceolate, 5.5-18 cm long, 0.5-2.2 cm broad; rheophytic.
51. H. angustissima.
2. Leaves ovate to oblong-lanceolate, 3-30 cm long, 1.5-10 cm broad; not rheophytic.
3. Bracts and bracteoles bearing sessile glands only or with translucent glandular excretions, the
glands often covering entire surface, most frequently paired toward bases of bracts and bracteoles;
stipitate glands absent from bracts and pedicels, but bract apex occasionally glandular.
4. Leaves oblong-lanceolate.
5. Leaves 9-14 cm long; young stems puberulous; pedicels 5-10 mm long; stipules eglandular.
52. H. tenuifolia.
5. Leaves 5-8 cm long; young stems hispid; pedicels 12-16 mm long; stipules with numerous
stipitate glands.
52.1. H. radamii.
4. Leaves oblong to ovate.
6. Young stem hispid; inflorescence rachis sparsely puberulous.
56. H. racemosa.