NO. I BROMELIACEAE OF BRAZIL — SMITH 73 



7. Leaf -blades narrowly triangular, acuminate; spikes elongate. 

 8. Floral bracts imbricate, 2 cm. long; spikes to 15 cm. long in 



the Brazilian variety of the species 2. T. elongata 



8. Floral bracts not imbricate, much less than twice the length 

 of the internodes, 5 cm. long; lateral spikes to SS cm. long, 



(Fig. 22.) 3. T. adpressiflora 



6. Inflorescence less than 3 dm. long, densely to laxly paniculate or 

 simple; floral bracts imbricate. 

 9. Inflorescences numerous in the leaf-axils, always simple; leaf- 

 blades ligulate, broadly acute or subobtuse; floral bracts 

 imbricate, exceeding the 10-15 mm. long sepals. 



4. T. complanata 



9. Inflorescence single, terminal, simple or compound; leaf -blades 



narrowly triangular, acuminate. 



ID. Primary bracts conspicuous, the lower ones nearly or quite 



equaling the axillary spikes ; inflorescence very dense ; 



leaf-blades 30-40 mm. wide; floral bracts carinate; sepals 



18-20 m. long, much connate posteriorly. . . 5. T. turneri 



10. Primary bracts much shorter than the axillary spikes or 



else the inflorescence simple; leaf -blades 5-20 mm. wide. 



II. Leaves covered with conspicuous spreading scales especially 



along the margins ; floral bracts 20-25 mm. long, nearly 



or quite glabrous, ecarinate 6. T. lorentziana 



II. Leaves covered with appressed or subappressed scales; 

 floral bracts 11-20 mm. long, usually densely lepidote. 

 12. Plant stemless ; inflorescence compound, fan-shaped 

 with all the spikes in one plane; leaf-blades 6-20 mm. 

 wide; floral bracts ecarinate. (Fig. 23.) 



7. T. didisticha 

 12. Plant with a stem up to 14 cm. long; inflorescence 



simple ; leaf -blades 5 mm. wide 8. T. dura 



5. Stamens barely exceeding the claws of the petals; petal-blades 

 spreading, broad, crenate-serrate ; inflorescence simple; sepals to 



42 mm. long in the Brazilian species Subgenus Aerobia 



9. T. xiphioides 



4. Filaments more or less transversely plicate or widened toward their 



apices; inflorescence dense, often simple with the flowers in more 



than 2 ranks; leaf -blades narrowly triangular or sometimes linear. 



(Figs. 24, 25.) Subgenus Anoplophytum 



13. Inflorescence compound; flowers in 2 ranks on the spikes. 



14. Floral bracts densely imbricate and concealing the rhachis, ex- 

 ceeding the 10-14 mm. long sepals ; leaf-blades narrowly tri- 

 angular, 15-20 mm. wide, coarsely cinereous-lepidote. 



10. T. gardneri 



14. Floral bracts separate and disclosing almost the whole rhachis. 



15. Leaf-scales coarse, spreading; leaves 9 cm. long, 10-15 mm. 



wide, without a distinct sheath; sepals 16 mm. long, the 



posterior ones connate for 10 mm 11. T. brachyphylla 



15. Leaf-scales appressed; leaves about 10-20 cm. long; sepals 

 12-15 n^i"- long, the posterior ones short-connate. 



