164 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 1 26 



8. Petals red ; flowers 30-40 mm. long ; sepals 18 mm. long. 



7. N. rutilans 

 7, Floral bracts serrulate ; flowers 45-55 mm. long ; sepals 20-22 mm. 

 long. 



9. Leaf-blades acute, 3-4 cm. wide; petal-blades rose or white. 



8. N. purpureum 

 9. Leaf-blades broadly rounded and apiculate, 4-6 cm. wide ; petal- 

 blades red 9. N. regelioides 



5. Inflorescence raised above the leaf -rosette ; scape exceeding the leaf- 

 sheaths, 

 ID. Blades of the primary bracts short and inconspicuous, giving the 

 inflorescence a capitate form. (Fig. y6.) 

 II. Floral bracts densely serrulate; leaf -blades 2-4 cm. wide. 

 12. Sepals 16 mm. long, connate for about half their length, the 

 free lobes ovate, mucronulate; leaves broadly acute and 



apiculate. (Fig. y6.) 10. N. itatiaiae 



12. Sepals 26-28 mm. long, connate for about a third of their 

 length, the free lobes acute or acuminate. 

 13. Sepals acuminate; inflorescence many-flowered; leaves acute 



and caudate-acuminate 1 1. N. longiflorum 



13. Sepals acute; inflorescence few-flowered; leaves broadly 



acute 12. N. pauciflorum 



II. Floral bracts entire. 

 14. Sepals mucronulate, about 11 mm. long, connate for 3 mm.; 

 flowers 33 mm. long; petal-blades blue; leaf -blades 18- 



25 mm. wide 13. N. antoineanum 



14. Sepals not mucronulate, acute or acuminate, 15-27 mm. long; 

 leaf-blades 30-35 mm. wide. 

 15. Petal-blades white; sepals 15 mm. long, very short-connate, 

 half exserted above the floral bracts ; flowers 37 mm. long. 



14. N. neglectum 



15. Petal-blades blue or purple; sepals 22-27 mm. long, connate 



for 4-5 mm., more than half exserted above the floral 



bracts. 



16. Sepals broadly acute, 27 mm. long; flowers to 48 mm. long. 



15. N. ferdinando-coburgii 

 16. Sepals filiform-acuminate, 22 mm. long; flowers to 40 mm. 



long 16. N. wettsteinii 



ID. Blades of the primary bracts long.narrow, and conspicuous, giving 

 the inflorescence a stellate form. (Fig. 77.) 

 17. Leaves broadly acute or rounded and apiculate; floral bracts 

 serrulate. 

 18. Sepals broadly acute or obtuse, mucronulate or apiculate, 

 connate for 7-8 mm. 

 19. Leaves i m. long, the blades 50-60 mm. wide; sepals 23 mm. 



long ; petal-blades pale blue 17. N. terminale 



19. Leaves to 33 cm. long, the blades 25 mm. wide; sepals 18 

 mm. long; petals unknown. (Fig. 77.) 



18. N. apiculattun 

 18. Sepals acuminate, 20 mm. long, connate for 3-4 mm.; petal- 

 blades blue 19. N. utriculosum 



