BROMELIACEAE— ORCHIDACEAE 61 



Tritonia — Montbretia 



(From the sea-god, Tritonia) 

 1. Perianth-tube longer than the slightly spreading sepals and petals T. Pdt/sii 



2. Perianth-tube about the length of the widely spreading sepals and petals 'J', crocosmdeflora 

 The latter is a garden hybrid of T. 1'ottsii and Crocosma aurea. 



Bromeliaceae — Pineapple Family 



Herbs, many of them epiphytic; leaves usually gray and scaly; sepals 3, petals 3, stamens 6, 

 pistil 1, ovary 3-celled ; flowers syncarpous, apopetalous or sympetalous, hypogynous or epigynous, 

 regular or somewhat irregular; sepals not petal- like, usually papery. The following genera are 

 tropical or subtropical plants, sometimes grown in greenhouses. 



Ovary inferior, plant growing in earth Ananas 



Ovary superior, air plant Tillandsia 



Ananas — Pineapple 



(Brazilian name of the pineapple) 

 Plant with a fleshy multiple fruit, surmounted by a crown of leaves A. saliva 



Tillandsia — Spanish Moss, Tillandsia 



Named for Tillonds, a Swedish botanist) 



1. Plant hanging in festoons; stem branched, thread-like; flowers solitary 



(Spanish Moss) 7. usneoides 



2. Plant with a tuft of erect leaves; flowers in a cluster 



a. Stamens shorter than the petals ; flowers few, blue T. recurvdia 



b. Stamens longer than the petals 



(1) Base of plant bulb-like; leaves about 1 dm. long T. bulbosa 



(2) Base of plant not bulb-like 



(a) Leaves awl-shaped, about 15 cm. long T. tenuifolia 



(b) Leaves 1 cm. or more wide, S dm. long T. fasciculata 



Scitaminales Canna Order 



Cannaceae — Canna Family 



Large herbs, with rootstocks and leafy stems; flowers in clusters; sepals 3, petals 3, sterile, 

 stamens 3-4, fertile stamen 1, pistil 1, ovary 3-celled, inferior; flower syncarpous, sympetalous, 

 epigynous, irregular ; sterile stamens petal-like and larger than the petals, one different from the 

 others, fertile stamen petal-like with the anther along one edge, style flat, ovary with a few large 

 seeds. 

 One genus Canna 



Canna — Canna 



(Lat. canna, reed, cane) 

 The garden Cannas are hybrids of numerous wild species from the southeastern United States, 

 West Indies, South America, and northern India. 



Orchidales Orchid Order 



Orchidaceae — Orchid Family 

 Herbaceous plants with rootstocks, corms, or solid thickened tuber-like stem bases; many of 

 them air-plants; sepals 3, or apparently 2 as a result of union, petals 3, stamens usually 3, fertile 

 stamens 1 or 2, pistil 1, ovary 1 -celled (rarely 3-celled), inferior, usually twisted; flower syncarpous, 

 apopetalous or sympetalous, epigynous, irregular ; sepals and petals usually similar in texture, one 

 petal (the "lip") differing from the others, stamens fused with the style to form a column, the 

 sterile stamens variable, the pollen of the fertile stamen usually in sticky masses (pollinia), ovary 

 usually bent or twisted so as to invert the flower, fruit with innumerable minute seeds. 



Many tropical and* subtropical forms are cultivated in greenhouses, and there are also numer- 

 ous native plants of this family, nearly all of which blossom in spring or summer. 

 1. Fertile stamens 2; lip slipper-like Cypripedium 



