74 POLYGALACEAE. 



late. Calyx of 3-5 sepals. Corolla of 3-5 petals. Androecium of 8-10, 

 or rarely fewer or more, stamens, with the filaments united into a tube. 

 Gynoecium of 3-5 united carpels. Ovary 3-5-celled. Fruit a berry, a 

 capsule, or a drupe. 



1. SWIETENIA Jacq. Trees, with hard wood. Leaf-blades once equally 

 pinnate. Sepals 5. Petals 5. Staminal-tube short, the lobes entire. Stigma 

 discoid. Capsule woody. 



1. S. Mahagoni Jacq. Tree becoming 25 m. tall : leaflets 4-8 ; blades leathery, 

 3-8 cm. long, entire: petals usually 3-4 mm. long: capsules ovoid, 6-12 cm. 

 long, erect. — Hammocks, U. keys, L. keys. — [E. K.] — (Bah., Citba, Ant.) — 

 Mahogany. Madeira-redwood. 



Order POLYGALALES. 



Herbs, shrubs, or trees. Leaves alternate, opposite, or whorled, some- 

 times scale-like. Flowers perfect. Perianth mostly irregular, each whorl 

 of 5, or rarely 3 or 4 parts. Androecium of 6, 8, or 10 stamens, the fila- 

 ments often partially united. Anthers opening by terminal pores or 

 cracks. Gynoecium of 2 united carpels, or rarely of more. Fruit capsular. 



- Fa^iily 1. POLYGALACEAE. Milkwort Family. 



Leaf-blades mostly entire. Flowers solitai-y, spicate, or racemose, 

 in'egular. Calyx of mostly 5 sepals, the 2 inner petaloid. Corolla of 5, 

 or often of 3, partially united petals, the lower one keel-like. Androecium 

 of 6-8 stamens, partially coherent with the petals. Anthers 1-celled. 

 Capsule usually 2-seeded. 



1. POLYGALA [Tourn.] L. Herbs or woody plants. Leaf-blades mostly 

 entire. Spikes or racemes lax or dense. Sepals 5, the 2 lateral ones (wings) 

 larger than the others. Petals 3, or rarely 5, the middle one (keel) commonly 

 lobed or crested at the apex. Stamens 8 or 6: filaments united into a tube or 

 into 2 sets. Style curved. Capsule flattened. Seed usually carunculate. — 

 Milkwort. 



Keel without beak or crest. 



Wings shorter than the capsule : capsules deeply notched. 1. P. Krugii. 



Wings much longer than the capsule : capsules shallowly notched. 2. P. coralUcola. 

 Keel with a papillose or tufted beak. 



Sepals not decurrent on the pedicel. 3. P. praetervisa. 



Sepals decurrent on the pedicel. 4. P. Carteri. 



Yi ' 1. P. Krugii Chodat. Plants 3-4 dm. tall : blades of the lower leaves spatu- 

 late to linear-spatulate, those of the upper leaves narrowly elliptic to linear- 

 elliptic or narrowly linear-lanceolate: flowers purple, often pale: sepals about 

 1.5 mm. long: wings broadly obovate, 2.5-3 mm. long at maturity: capsules 

 about 3 mm. long. — Coastal sand-dunes, U. S. keys. — [E. K.] — (Bah.) 



2. P. corallicola Small. Plants 2-4.5 dm. tall: blades of the upper leaves 

 linear, typically narrowly so, or filiform-linear: fiowers purple: sepals 1-1.5 mm. 

 long at maturity: wings 3.5-4 mm. long at maturity: capsules 3-3.5 mm. 

 long. — Pinelands, L. keys. — [E. K.] — (Bah., Cuba.) 



3. P. praetervisa Chodat. Plants erect, 3-6 dm. tall: blades of the lower 

 leaves obovate, those of the upper ones lanceolate to linear-subulate: flowers 



