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I BOTANICAL EXPLORATION IN VENEZUELA - I 145
localities some seventeen hundred miles apart, so the above description
is wholly from the type. However, I can find no significant
difference in Steinbach 9623 which comes from the department of
Cochabamba in Bolivia.
Navia aurea L. B. Smith, sp. nov.
Breviter caulescens; caule baud ultra
10 cm. longo, 8 mm. dia metro;
foliis multiseriatis, persistentibus, caulem omnino obtegentibus,
vaginis late obovatis, 12 mm. longis, tenuibus, nervatis, ad apicem
versus subdense serrulatis, laminis linearibus, acuminatis pungentibusque,
8 cm. longis, 2-3 mm. lads, laxe minuteque serrulatis,
coriaceis, viridibus (ISteyermark), juvenilibus ad basin versus
laxissime albido-floccosis, per aetate glabris lucidisque; inflorescentia
dense capituliforme, sessile; bracteis florigeris anguste
lanceolatis, sepala subaequantibus, apice minute serrulatis; floribus
imperfecte cognitis, sessilibus; sepalis liberis, lineari-lanceolatis,
longe acuminatis, ca. 12 mm. longis, tenuibus, glabris, lateralibus
carinatis; petalis aureis, ca. 25 mm. longis (Fig. 21, a* bX
Type collected in dry rock crevices of bluff along Cano Negro,
summit of Cerro Duida, Savanna Hills, Territorio Federal Amazonas,
alt. 1025-1200 m., September 2, 1944, Julian A. Steyermark 58219.
Its bright yellow flowers immediately separate Navia aurea from all
other known members of the genus, yet its very fine many-ranked
leaves with their delicate cobwebby indument distinguish
it even
when sterile.
Navia duidae L. B. Smith var. glabrior L. B. Smith, var. nov.
Differt foliis subtus minute punctulato-lepidotis, glaucis, haud
cinereis.
Type collected along rocky banks of Cano Negro, summit of Cerro
Duida, between Brocchinia Hills and Savanna Hills, Territorio
Federal Amazonas, alt. 1050-1600 m., September 2, 1944, Julian A,
Steyermark 58210; terrestrial among rocks.
Navia glauca L. B. Smith, sp. nov.
Caulescens; caule ad 15 cm. longo,
1 cm. diametro; foliis caulem
dense quaquaverse vestientibus, patentibus, vaginis brevibus,
omnino occultatis, laminis anguste triangularibus, acuminatis,
pungentibus, infra 7 cm. longis, ad 9 mm. latis, laxe minuteque serrulatis,
coriaceis, supra glabris viridibusque, subtus minute pilosolepidotis
et glaucis; inflorescentia dense capituliforme, in foliorum
centre nidulante, pauciflora; bracteis florigeris lanceolatis, sepala
superantibus, glabris; floribus sessilibus; sepalis liberis, 14 mm.
longis, oblongo-lanceolatis, acutis, glabris, posticis carinatis;
petalis ad 23 mm. longis, albis; staminibus styloque inclusis (Fig.
21, c-e).