ANNONACEAE. 19 



divided: sepals ovate to ovate-lanceolate, brownish-purple: follicles oblong, 

 3-4 mm. long. YELLOW-ROOT. SHRUB YELLOW-ROOT. 

 Woods and banks, m. Fla. (Cont.) Spr. 



FAMILY 2. ANNONACEAE. CUSTARD-APPLE FAMILY. 



Shrubs or trees. Leaves alternate : blades entire. Flowers perfect, 

 monoecious, or dioecious. Calyx of 3, or 2, sepals. Corolla of mostly 6 

 petals much larger than the sepals, those of the inner series smaller than 

 those of the outer, or wanting. Androecium of many stamens, each 

 anther terminating in a blunt glandular appendage. Gynoecium of few 

 or many distinct carpels. Fruit a simple or aggregate berry. 



Carpels distinct, several-ovuled : anther-sacs separated. 1. ASIMINA. 



Carpels confluent, 1-ovuled : anther-sacs contiguous. 2. ANNONA. 



1. ASIMINA Adans. Ill-scented plants. Leaves mostly deciduous: 

 blades broadened upward. Petals 6, much larger than the sepals, spreading. 

 Carpels few: style subulate. Fruit simple. Spr., or winter southward. CUS- 

 TARD-APPLE. PAPAW. 



Flowers terminal, or from the axils of the leaves of the season, appearing after the 



leaves. 

 Flowers axillary (except rare cases in no. 1), long-pedicelled : leaf -blades long and 



narrow, linear or oblanceolate. 



Mature outer petals 3.5 cm. long or longer, white or yellowish white at ma- 

 turity. 1. A. angustifolia. 

 Mature outer petals 3 cm. long or shorter, deep black- 

 purple at maturity. 

 Petals oblanceolate or narrowly obovate, the outer 2-3 



cm. long. 2. A. pygmaea. 



Petals oblong, all nearly alike, 6-8 mm. long. 3. A. Rugelii. 



Flowers terminal, sessile or nearly so : leaf-blades short and 



broad, obovate or oval. 4. A. obovata. 



Flowers from the axils of the deciduous leaves of the preceding 



season, appearing before the leaves. 

 Leaves leathery ; blades reticulate : flowers yellowish-white, 



1 or 2 in an axil. 

 Young leaves densely tomentose on both surfaces : mature 



outer petals 4-5 cm. long. 5. A. speciosa. 



Young leaves sparingly tomentose, the upper surface soon 



glabrous : mature outer petals 2.5-4 cm. long. 6. A. reticulata. 



Leaves membranous : blades not reticulate : flowers purple, 



solitary in the axils. 

 A shrub mostly less than 1.5 m. tall : mature outer petals 



1 cm. long or shorter : fruit 3-4 cm. long. 7. A. parviflora. 



A shrub or tree 3-12 m. tall : mature outer petals 2 cm. 



long or longer : fruit 7-16 cm. long. 8. A. triloba. 



1. A. angustifolia A. Gray. Shrub 4-9 dm. tall, the stems generally erect, 

 the twigs sparingly pubescent: leaves numerous and usually variable in size; 

 blades linear to narrowly spatulate or oblanceolate, 5-20 cm. long, mostly 

 acute: inner petals nearly oblong, 3-3.5 cm. long. 



Pinelands, n. Fla. (Ga.) 



2. A. pygmaea (Bartr.) A. Gray. Shrub 2-6 dm. tall, the stems arcuate, the 

 twigs sparingly pubescent: leaves relatively few; blades oblong-oblanceolate 

 to spatulate, 5-15 cm. long, mostly obtuse: inner petals ovate, 1-1.5 cm. long. 



Pinelands, e. and pen. Fla. (Endemic.) 



3. A. Rugelii B. L. Eobinson. Shrub less than 1 m. tall, the stems flexuous, 

 the twigs red-tomentulose : leaves rather few; blades oblong, 2.5-4 cm. long, 

 obtuse: flowers short-pedicelled : outer petals 6-8 mm. long, slightly longer 

 than the inner. 



Pinelands, pen. Fla. (Endemic.) 



