374 



HENDERSON'S HANDBOOK OF PLANTS. 



JA6 



~T~asm,inaceoe, (Jasminece, Bolivarwce, Jas- 

 minwortif.) A natural order of corol- 

 lifloral Dicotyledons belonging to Lind- 

 ley's Echial Alliance of perigynous Exo- 

 gens. They are shrubs, often twining, 

 with opposite or alternate, usually com- 

 pound leaves. They are found chiefly 

 in the tropical parts of India. There 

 are six known genera and above a hun- 

 dred species. Jasminum and Nyctanthes 

 are examples of the order. 

 Joints. Certain parts where the uniformity 

 of the tissue is altered, and where it 

 may readily be ruptured or fall asunder 

 in decay. 



LAT 



Juglandacece, (Juglands.) A natural order 

 of monochlamydeous plants belonging to 

 Lindley's Qusrnal Alliance of diclinous 

 Exogens. They are trees with alternate 

 pinnate stipulate leaves and unisexual 

 flowers. They are chiefly natives of 

 North America and the Indies. Juglans 

 regia is the English "Walnut or Madeira 

 Nut of the fruit stores. Carya alba is the 

 American Hickory Nut. Juglans nigra is 

 the Black Walnut. They are valuable 

 timber trees. There are few known 

 genera and about thirty species. Jug- 

 lans and Carya are examples of the or- 

 der. 



K 



~T7~~ed. When the midrib of a leaf or 

 petal is sharp and elevated exter- 

 nally it is called a keel. 

 Keeled. Formed in the manner of the 

 keel of a boat; that is to say, with a 



sharp projecting ridge, arising from a 

 flat or a concave central plate, as the 

 glumes of grasses. 



Knot. A swelling iu some stems where the 

 attachment of the leaves takes place. 



L. 



J~abettum.lAy ; or rather the lower Up 

 only. The third petal of an Orchid, 

 usually turned toward the lower front of 

 the flower, and very different from the 

 remainder; also a similar petal in other 

 flowers. 



Labiate. Having lips; a term applied to 

 that form of a monopetalous calyx or 

 corolla which is separated into two un- 

 equal divisions, the one anterior and the 

 other posterior; with respect to the axis. 



Laciniate. Cut or divided into segments; 



fringed. 

 Lactescent. Containing or yielding a milky 



juice. 

 Lana, Lanugo, (adj. Lanate, Lanuginose.) 



Long, dense, curled, and matted hairs, 



resembling wool 

 Lanceolate. Shaped like the head of a 



spear; narrow and tapering at each end. 

 Lanuginosus. Downy; cottony. See Lana. 

 Latent. Lying dormant till excited by 



