134 



ORIGANUM— OSMUND A. 



late, obtuse, 3-toolhed ; petals obtuse ; spur 

 filiform, longer than the germ. 6-12 i. 



fln'ya,{y. Ja. 21.) lip 3-cleft, entire ; mid- 

 dle division larger ; spike compact ; bracts 

 longer than the flower. 1-2 f. 



fimbria'ta,. (p. Ju. 11.) lip 3-parted ; lobes 

 all: incisely fimbriate and wedge-form ; 

 segments of the perianth oval, spreading, 

 fimbriate -toothed ; spur filiform, clavate, 

 longer than the germ; leaves broad-lance- 

 olate ; purple flowers, in a large spike. 

 2 f. Meadows. 



obiiole'tn, {3. II) lip oblong, lanceolate, 

 undivided ; petals erect ; horn obtuse, as 

 long as the germ ; bracts very short ; root 

 oval or palmate. 



rires"cenx, (g. Ju. 11.) lip lanceolate, cre- 

 nate ; petals connivent ; bracts longer than 

 the flowers ; spur sub-inflated, obtuse ; root 

 fascicled. 12-18 i. 



liyperbo'ren, (g-y. Ju. If.) lip lanceolate, 

 as large as the spreading petals; spur sub- 

 ulate, shorter than the germ ; spike ovate ; 

 bracts as long as the flowers ; roots fascicled. 

 obtusa'ta, {11.) lip linear, very entire, 

 longer than the hora which is the length of 

 the germ ; leaf solitary, radical, sub-wedge- 

 form, obtuse ; roots fascicled. 



rotundifo'lia, {11.) lip 3-cleft, middle seg- 

 ment 2-cleft ; spur shorter than the germ ; 

 leaves roundish-oval ; root fascicled. ^ 



nive'a, (w.) lip linear, oblong, entire ; pe- 

 tals spreading ; horn filiform, longer than 

 the germ ; lower leaves linear, very long, 

 upper ones subulate. S. 



vir"idis, (g w, Ju.) lip linear, 3-toothed at 

 the apex ; petals connivent ; horn obtuse, 

 sub-inflated ; bracts much longer than the 

 flowers ; root fascicled. 3 i. S. 



hidenta'ta, lip oval, oblong, 2-toothed at 

 the base ; petals ovate, expanding ; horn 

 shorter 'than the thickened germ; leaves 

 narrow-lanceolate. ; stem nearly naked. 

 12-18 i. S. 



See Habenaria. 



ORIGA'NUM. 13—1. (Labiates.) [From oros, 



a mountain, and go no, to rejoice, so called 



because it grows upon the mountain sides.] 



vnlga're, (wild marjoram, r. Ju. li.) spikes 



round, panicled, heaped; bracts' ovate, 



longer than the calyx. 1-2 f. 



mnjora'na, (sweet marjoram,^.) spikes 

 roundish, ternate, compact, peduncled ; 

 leaves petioled, oval, obtuse, smoothish. 

 6-12 i. Ex. A native of Portugal. 

 ORNITIIOCALUM. 6—1. (Asphodeli.) [From 

 ornis, a bird, and gala, milk, from the color 

 of its flowers. J 



umbella'tum, (star of Bethlehem, M. ll) 

 flowers corymbed ; peduncles longer than 

 the bracts ; filaments subulate. Natural- 

 ized. 6-8 i. 



bracten'tinn, (p. 11.) scape bracted, 1- 

 flowered, terete; petals lance-oblong, ob- 

 tusish; filaments linear; leaves channeled, 

 filifonu. 4 i. (S. I 



pyrnmida'le, (prussian asparagus,) a na 

 tive of Spain. 



latifo'lium, a native of Egypt. 

 Cauda' turn, Cape of Good Hope. 

 OR"NUS. 2— J. (.Jasmine u ) [From tlie He- ! 

 brew orn, an ash.] | 



america'na, (M. "^ .) leafets broad-ovate, 

 serrate, terminal one obcordate. Shady 

 woods. Resembles the genus fraxinus. 



.europe'a, affords the manna of commerce. 



The American oraus is thought by some to 



be but a variety- of this. Ex. 



OROBAN"CHE. 13-2 (PedicuJares.) [From 



orobos, the wild pea, and agchein, to suffocate, 



so called because it twines around the orobos 



and destroys it.] 



unijlo'ra, (cancer-root, b-w. M. 21.) stem 

 very short ; peduncles 2, elongated, scape- 

 form, 1-flowered, naked ; scales smooth, 

 concave ; lobes of the corolla oblong-oval, 

 with a pubescent, colored margin. 4-6 f 

 Parasitic. Woods. 



america'na, (Ju. 11.) stem simple, covered 

 with ovate-lanceolate, imbricate scales , 

 spike terminal, smooth ; corolla recurved 

 stamens exserted ; flowers brownish yellow 

 the spike covered by the scales of the stem 

 6-8 i. Parasitic. Woods. 



ludovicia'jia, (p.) pulverulent, pubescent , 



stem low, simple ; flowers and ovate-acute 



j scales sub-imbricate ; calyx 2-bracted ; co- 



j roll a recurved; stamens enclosed, smooth. 



; 3-4 i. 



j fafcicida'ta, (p. Ju.) stem short, simple ; 

 peduncles numerous, naked, nearly termi- 

 nal, about the length of the stem ; scales 

 j few, ovate, concave, pubescent. 4-5 i. 



ma'jor, stem erect, somewhat scaly and 

 I bulbous at the base, terminating in a spike 

 j of rather large purplish or brownish flow- 

 ers. Parasitic. Ex. 



ru'hra, very fragrant, similar in appear- 

 ance to the preceding species. Ex. 



ORO'BUS. 16—10. (Legurr.inosm.) [From 

 erepto, to eat, the root being considered nu- 

 tritious.] 



dis"par, (ervum, w-y. J. 2J[.) leaves une- 

 qually pinnate ; leafets linear, obtuse ; sti- 

 pules ovate, acute ; racemes sessile. 



tubero'sus, the heath-pea. The Scotch 

 islanders chew the root ; they hold the 

 plant in high esteem. Ex. 



ORON"TIUM. 6—1. {Aroidcs.) [From Orontes.-i 

 aquaficum, (golden clul?, y. M. 2J.) 

 leaves all radical, lance-ovate ; scape .cylin- 

 drical, spiked ; flowers with a peculiar 

 smell. Water. 1-2 f. 



OKTHOCAR'TUS. 13—2. (Pediculares.) 

 [From orthos, erect, and carpos, fruit.] 

 lute'us, (y. Ju.) stem simple, terete, hir- 

 sute ; leaves alternate, sesaile, acute, entire , 

 calyx,bracts and leaves viscid-pubescent. 

 12-14 i. S. 



ORY'ZA. 6—2. (GraminecB.) [From orez, 

 Arabian.] 



saii'va, (rice, 0.) culm jointed; leaves 

 clasping ; panicle terminal. Ex. 



ORYZOF'SIS. 3—1. (Graminem.) [From 

 oruza, rice, and op.ns, resemblance.] 

 af:pcrifo'lia, (mountain rice, M. 2^.) culm 



nakcdish; leaves rigid, erect, pungent at 



the point ; flowers in a racemose panicle. 



18 i. 



OSMORIII'ZA. (See UR.vsFER"MrM.) 



OSMUN"DA. 21—1. (Filices.) [From Os- 

 mund, who first used it as a medicine.] 

 cinnamo'mea, (flowering-fern, y. J 2j..) 



