June, 1923] 
GLEASON — BOLIVIAN SPECIES OF VERNONIA 
299 
Leaves softly ferruginous-tomentose beneath, acuminate at 
the base, acute or subacuminate at apex, entire. 5. V. pycnantha. 
Leaves tomentose beneath only on the prominently 
reticulate veins, truncate or subcordate at base, acumi¬ 
nate at apex, minutely spinose-denticulate. 6. V. yungasensis . 
2. V. jubifera Rusby, Mem. Torrey Bot. Club 6: 53. 1896. 
Between Mapiri and Tipuani, Bang 13 54 (type). 
3. V. Conwayi Rusby, Bull. N. Y. Bot. Gard. 8: 125. 1912. 
Near Inglis-Inglis, Williams 1493 (type). 
4. V. boliviano, Britton, Bull. Torrey Bot. Club 18: 332. 1891. 
Near Yungas, Rusby 1729 (type); Coroico, Yungas, Bang 2409; without 
further data, Bang. 
5. V. pycnantha Benth., PI. Hartweg. 134. 1844. 
Yungas, Rusby 1728. 
6. V. yungasensis Britton, Bull. Torrey Bot. Club 18: 332. 1891. 
Near Yungas, Rusby 1731 , Rusby 1732 (type). 
Section 3. Lepidaploa 
Subsection 3 a 
Bracts resembling the leaves in shape, and but little if any reduced 
in size. 
Leaves linear. 
Heads small, the involucre 6-7 mm. high; leaves somewhat 
revolute, narrowly linear, 2-3 mm. wide, the lateral 
veins suppressed. 7. V. rubricaulis. 
Heads large, the involucre 10-16 mm. high; leaves thick 
and heavy, broadly linear, 5-15 mm. wide, the lateral 
veins prominent. 
Outer involucral scales broadly ovate, subacute and 
mucronulate; involucre about 11 mm. high; leaves 
closely tomentose beneath. 
Outer involucral scales lanceolate, long-acuminate or 
subulate, involucre about 16 mm. high; leaves thinly 
pubescent beneath. 
Leaves broader than linear. 
Involucre 6 mm. high. 
Involucre 10-13 mm. high, broadly campanulate to 
hemispheric. 
Middle scales subacute or obtuse, closely appressed, 
almost glabrous, the inner purple and prominently 
puberulent with short yellowish hairs. 
Middle scales sharply acute to subulate, usually 
spreading. 
Bracts much smaller than the leaves. 
Involucre narrowly campanulate or subcylindric, its scales 
obtuse or subacute, appressed, closely imbricate; heads 
about 8-flowered; achenes hirsute on the ribs only. 13. V. obtusata. 
8. V. ligulaefolia. 
9. V. ixiamensis . 
10. V. saltensis. 
11. 
12. 
V. varroniaefolia, 
V. robusta. 
