NO. I BROMELIACEAE OF BRAZIL — SMITH 39 



2. Petals joined or closely agglutinated and simulating true fusion, the 

 corolla-tube about equaling the calyx or longer; flowers always poly- 



stichous. (Fig. 49.) 13. Guzmania 



I. Appendage of the seed apical, folded at maturity ; sepals strongly asymmetric 

 in most species ; flowers polystichous. (Fig. 50.) 14. Catopsis 



Subfamily 3. eromelioideae 



I. Petals naked; flowers never in strobilate spikes. 

 2. Filaments not forming a tube; petals free or connate by their margins. 

 3. Inflorescence elongate or if short (some species of Streptocalyx) then 

 the flowers distichous ; petals free. 

 4. The inflorescence simple, lax; flowers pedicellate. (Fig. 51.) 



15. Fernseea 

 4. The inflorescence compound; flowers pedicellate or sessile. 



5. Sepals not more than 3 mm. long; flowers minute, sessile or pedicel- 

 late ; ovules few. (Fig. 52.) 16. Araeococcus 



5. Sepals 8-23 mm. long; flowers larger, sessile; ovules numerous. 



(Figs. 53, 54.) 17. Streptocalyx 



3. Inflorescence densely capitate or capitiform, often involucrate; flowers 

 never distichous ; petals free or connate by their margins. 

 6. Flowers on slender pedicels ; inflorescence involucrate, sunk in the 

 center of the rosette; petal-blades spreading, acute. (Figs. 55-66.) 



18. Neoregelia 

 6. Flowers sessile or subsessile. 



7. Epigynous tube very short or lacking, 

 8. Petals thin, widely spreading, obtuse, white or rarely yellow ; 

 bracts of the inflorescence foliaceous; usually some of the 



flowers unisexual. (Figs. 67-72.) 19. Cryptanthus 



8. Petals fleshy, erect or rarely spreading and acute; bracts of the 

 inflorescence not foliaceous; flowers all perfect. (Figs. 7Z-77-) 



20. Nidularium 

 7. Epigynous tube elongate; scape elongate, slender; inflorescence not 



involucrate. (Fig. 78.) 21. Andrea 



2. Filaments forming a tube to which the fleshy petals are joined along their 

 centers but with their margins free ; inflorescence compound, many- 

 flowered, sessile or scapose, globose or elongate. (Figs. 79-81.) 



22. Bromelia 

 I. Petals appendaged or when rarely naked then the flowers strobilate. 

 9. Ovaries always remaining distinct ; inflorescence compound or simple ; 

 sepals often mucronate. 

 10. Ovary in small part superior ; scape naked ; inflorescence simple, 



strobilate, pseudolateral. (Fig. 82.) 23. Acanthostachys 



10. Ovary completely inferior. 



II. Scape-bracts foliaceous or the scape lacking; sepals always free; 



epigynous tube very short or none. 



12. Petal-scales well developed; sepals nearly or quite symmetric, 



10-20 mm. long; inflorescence or its spikes few-flowered, small. 



(Figs. 83-85.) 24. Orthophytum 



