130 HANDBOOK OF BROMELIACE^, 



Subgenus 1. Dyckia proper, — Flowers in simple or panicled 

 elongated spikes or racemes. Style very short. Filaments thick, 

 fleshy, flattened. Petal-blade orbicular or obovate. 



Inflorescence simple. 



Leaves lanceolate, not acuminate . . . Sp. 1-4. 



Leaves ensiform, acuminate .... Sp. 5-14. 



Inflorescence panicled ..... Sp. 15-21. 



Subgenus 2. Prionophyllum (K. Koch). — Flowers in simple or 

 panicled elongated spikes. Filaments filiform. Petal-blade oblong, 



Sp. 22-31. 

 Subgenus 3. Navia (Mart.). — Flowers in a panicle of strobili- 

 foim spikes. Filaments filiform. Petal-blade lanceolate. 



Sp. 32. 

 Subgenus 4. Cephalonavia. — Inflorescence a central sessile 

 capitulum. Filaments filiform. Petal-blade linear-lanceolate. 



Sp. 33. 

 Subgenus 5. Encholirion (Mart.). — Flowers in a long simple 

 raceme. Filaments long, filiform, arcuate. Petal-blade linear- 

 lanceolate. Sp. 34. 



Subgenus 1. Dyckia proper. 



1. D. Grisebachii Baker. Navia hrevifolia Griseb. Symb. 

 Argent. 332. — Tufts IJ in. long, 1 in. diam. Caudex very short. 

 Leaves lanceolate, an inch long, J in. broad at the dilated base, 

 narrowed gradually to the point ; lower surface linear and lepidote ; 

 marginal spines 3-5 on each side of the leaf. Flowers unknown. 



Hab. Argentine Kepublic ; province of Oran in the valley of Tambo, 

 where it grows in dense masses on the rocks, Lorentz <& Hieronymus 947 1 



2. D. densiflora Schultes fil. Syst. Veg. vii. 1194. — Leaves 

 short, lanceolate, 1-lJ- in. broad at the base, narrowed gradually 

 to the point ; marginal spines brown, patent, -^^ in. long. Peduncle 

 1-lf ft. long, thinly white-pubescent ; lower bract-leaves 1-1-|- in. 

 long ; upper |~f in. Inflorescence a rather dense raceme 3-7 in. 

 long; flowers 20-24, patent; pedicels short; lower flower-bracts 

 equalling or exceeding the flowers. Sepals ovate, ^ in. long. 

 Petals shortly exserted. Filaments as long as the calyx. 



Hab. Central Brazil ; Morro de Villa Eica, Martius. 



3. D. BREViFOLiA Baker in Saund. Kef. Bot. t. 236. — Leaves 

 80-40 in an open rosette, 8-10 in. broad, 3 in. deep, lanceolate, 

 4-6 in. long, an inch broad and ^-^ in, thick at the base, narrowed 

 gradually to a pungent tip, bright green on the flat face, con- 

 spicuously vertically lineate with white and green on the rounded 

 back, the marginal spines small, brown, hooked. Peduncle l-l|-ft. 

 long ; lower bract-leaves crowded, upper remote. Inflorescence a 

 lax spike a foot long, with a stout straight glabrous rachis ; lower 

 flowers spreading; flower-bracts as long as the flowers. Sepals 



