536 



NATURAL ARRANGEMENT. 



429. ORDER CLXXIX. HYDROCHARI'DE^E. 

 Genera 4, Species 5 ; Hot -house Species 1 ; Green-house Species 2 ; Hardy Ligneous Species ; 



Hardy Herbaceous Species 2. J feet; feet; ^ 3J feet. 



Floating white-flowered plants, of which Stratibtes is the most majestic. They possess no known properties, 

 but have the singular character in Monocotytedpnes of being in some cases lactescent. The species are natives 

 of various parts of the world. Offsets and division. 



2735 Vallisneria L. I 1130 Damasbnium Schreb. 



2795 Hydrocharis L. *0 1 | 2802 Stratiotes L. *0 1 



430. ORDER CLXXX. ALISMA^CE^E. 

 Genera 3, Species 26 ; Hot-house Species 4 ; Green-house Species 9 ; Hardy Ligneous Species ; 



Hardy Herbaceous Species 13. 1 feet ; feet ; =*= 7 feet. 



Handsome water plants, with white flowers, and many ovaria. Some are common in our English ditches, 

 others are found in similar situations in the tropics. Offsets, division, and seeds. 

 2653 Sagittkria L. *0 5 | 1131 Actinocarpus R. Br. *0 1 | 1132 ^lisrna L. *0 7 



431. ORDER CLXXXI. BUTO V ME^. 

 Genera 2, Species 3 ; Hot-house Species 1 ; Green-house Species ; Hardy Ligneous Species 0; 



Hardy Herbaceous Species 2. 1 feet ; feet ; * 3| feet. 



Fine water plants, of which Btttomus, by general consent the most beautiful of British plants, has purple 

 owers ; and Limnocharis, a native of the marshes of Brazil, has yellow ones. Division and seeds. 



1234 Butomus L. 



*0 



1558 Limn6charis Bonp. 



432. ORDER CLXXX 1 1. JUNCAGFNE2EL 

 Genera 2, Species 8 ; Hot-house Species ; Green-house Species 2 ; Hardy Ligneous Species ; 



Hardy Herbaceous Species 6. JO feet ; j 6 feet ; * feet. 



Insignificant bog plants, with grassy leaves, and central spikes or racemes of greenish yellow flowers. 

 Divisions. 



1106 Scheuchzeno L. 



*0 



| 1107 Triglbchin L. 



*0 



433. ORDER CLXXXI 1 1. ORCHI'DE.E. 



Genera 111, Species 425 ; Hot-house Species 214 ; Green-house Species 111 ; Hardy Ligneous Species ; 

 Hardy Herbaceous Species 100. 1 feet ; 15 feet ; ^ feet. 



Of all tribes of plants, this is the most singular, the most fragrant, and the most difficult of culture. The 

 flowers are often remarkable for their grotesque configuration, which has been likened to heads and bodies of 

 animals, and for the strange character of their stems, which are sometimes attenuated into a degree of grace- 

 fulness scarcely equalled even among grasses, and sometimes contracted into a clumsy goutiness of figure 

 such as is known no where else. The species are found inhabiting the mountains and meadows of the cooler 

 parts of the globe, or adhering by their tortuous roots to the branches of the loftiest trees of the tropical 

 forest, to which their blossoms often lend a beauty not their own. Vulgarly, this last description of plants is 

 called parasitic ; they are, however, not so, deriving no support from the juices of the plants on which they 

 grow ; but, on the contrary, are epiphytes, merely adhering to other plants for support, and vegetating amidst 

 the rich black soil which collects at the foot of all trees growing in a hot humid climate. It is very singular, 

 that the pollen of these plants has no parallel, except among the very different and distinct order of 

 Asclepi&deae. The only medicinal properties of the order exist in the roots of some of the Orchises from 

 which the nutritious substance called salop is prepared. The Vanilla of the shops is the pod of the 'genus 

 called Vanilla. From the boiled stems of some of the Brazilian species a tenacious glue is obtained 

 is employed in many useful purposes. Division and offsets. 



434. Tribe 1. NEOTTIE V .<E Lindl. 

 lig.O. herb. 10. 4 ft. 



2492 Goodyera R. Br. *0 



2500 Thelymitra Forst. 



2493 Diuris Sm. 



2499 Orth6ceras R. Br. 

 2498 Cryptostylis R. Br. 



2494 Ponthit:v R. Br. 



2510 Prasophyllum R. Br. 



2502 Calochllus R. Br. 



2496 Neottia Swz. *0 



2495 Pel^xia Poit. 



2501 Listera R. Br. *0 



2497 Stenorhynchus Rich. 



435. TribeS. ARETHU^E.E Lindl. 

 lig. 0. herb. 10. 5 ft. 



2503 Arethusa L 



2504 Calopogon 72. Br. 



2505 Pogftnia 72. Br. 



2511 Micrbtis 72. Br. 



2512 Acianthus 72. Br. 



2513 Cyrtostylis 72. Br. 



2514 Chiloglbttis 72. Br. 



2515 Eriochllus 72. Br. 



2516 Caladenia 72. Br. 



2506 Lyperanthus 72. Br. 



2517 Glossr.dia 72. Br. 

 1518 Pterostylis 72. Br. 



2507 Tipipactis Rich. *0 



2508 Cephalanthera Rich. *0 

 2520 Corallorrhlza 72 Br. *0 



2509 Calya R. Br. 

 2519 Corysanthes 72. Br. 



436. Tribe 3. GASTRODIE\E 



R.Br. 

 2574 Prescbt/'a Lindl. 



