EXPLANATION OF PLATE H. 



Fig. 1. Yucca aloifqlia. (Family of \he LiliacecE.') Adam's Needle. A tree of 

 ten or twelve feet in height, indigenous in the West Indies. Stype cylindric, erect, 

 sometimes two or three-forked. Leaves terminal, alternate, crowded, semi-amplexi- 

 caulis, ensiform; the upper ones erect, the lower ones pendent, the intermediate, 

 spreading or retiexed. Panicle simple, terminal, pyramidal. Flowers pendent. Peri- 

 anth simple, six-sepalled, campanulate. This plant belongs to HexandJria Monogynia. 

 It is the majestic hly of the tropics. The name Yucca is from Jucca, the Indian ap- 

 pellation. 



Fig. 2. Saccharum officinale. (Family of the Grasses.) Sugar-cane. An her- 

 baceous, perennial plant, which grows to the height of ten or twelve feet. Culm is 

 vertical, cylindrical, solid. Leaves sheathing, elongated, ensiform. Panicle large, 

 silky. The name Saccharum is from the Arabic, souAar, sugar. This plant is thought 

 to be a native of India, but it is now cultivated in most warm countries. With most 

 of the grass-like plants, it belongs to Triandria Digynia. 



Fig. 3. FEtLVhAtingUana. {FaiXnily oi the UmbellifercB.') Giant-fennel. Herba- 

 ceous plant, biennial, 8 or 9 feet in height. Stem cylindrical, vertical. Leaves alter- 

 nate, large, decompound, with very small leafets. Petioles with a large base, amplex- 

 icaulis. Panicle terminal, composed of umbels. This plant grows in Spain arid 

 Barbary ; it belongs to Pentandria Digynia, where the umbelliferous tribe is mostly 

 classed. A species of this genus. Ferula assafoetida, produces from its root the me- 

 dicinal gum, assafcEtida; from another species, the galbanum is obtained. 



Fig. 4. CvMBiDiuM ec/iwiocarpon. (.Family of the Orchidece.) A parasitic plant of 

 South America which grows to the height of two or three feet. Stems compressed. 

 Leaves opposite, oval, acute. Capsule bristly. This plant belongs to Gynandrin 

 Monandria. A species C* pulchelluvi (grass-pink) is very common in our region. 



* It may be proper to inform the student, that where several species of a genus are mentioned, it ia very 

 common to designate tlie name of the genus by the initial letter ; thus C. stands for Cymbidium. 



