,40 The New York State College of Forestry 



1. Several styles or stigmas indicate a compound i)istil of a like 

 riimber of carpels. The reverse does not apply as several car- 

 pels may have completely cohered. 



2. Several cells or lociiles generally indicate a like number of 

 carpels. The reverse does not apply as a compound ovary may 

 consist of but a single cell. 



3. Several parietal placentae generally indicate a like number 

 of carpels. 



4. Dehiscent dry fruits, resulting from more than one carpel, 

 generally open by a like number of sutures. 



The wall of a ripened ovary is known as the pericarp. Within 

 the pericarp are one or more ovule-bearing chambers or locules. 

 A placenta denotes the line or surface within the ovary on which 

 the ovules are borne. Placentae may be parietal (on the wall), 

 basal, axile, or free central. 



Classification of Angiosperm Fruits 



A. Fruit classified as to the escape of seed from the ovarj' 



a. Dehiscent. Said of fruits which open at maturity 



to release the fruit. Paulownia (Fig 61). 



b. Indehiscent. Said of fruits which do not open at 



maturity to release the seed. Elm (Fig. 56). 



B. Fruit classified as to texture 



a. Fleshy throughout or nearly so. 



1. Soft-fleshy throughout except the seed. Berry 



(Persimmon, Fig. 65). 



2. Fleshy throughout except the seed and the carti- 



lagenous or leathery carpellary surfaces im- 

 mediately surrounding the seed. Pome (Apple, 

 Fig. 52). 



b. Fleshy without, bony within. Drupe (Cheriy, 



Fig. 62). 



c. Dry. 



1. Indehiscent. 



(a) Winged. Samara (Elm, Fig. 56; Maple, 



Fig. 58). 



(b) Un winged. 



(1) Bony or woody. Nut (Hickory, Fig. 



66; Acorn, Fig. 63). 



(2) (Coriaceous. Indehiscent dry fruit, 



(Basswood.) 



