ORIGANUM, PASTINACA. 399 



131. ORIGANUM. 4239. 



vtdga're (wild marjoram. O. r. Ju. 4), spikes round panicled, heaped ; bracts 

 ovate, longer than the calyx. 1 2 f. S. 



Exotic. 



majora'na (sweet marjoram. > ), spikes roundish, ternate, compact, peduncled ; 

 leaves petioled, oval, obtuse, smoothish. 6 12 i. 



61. ORNITHOGALUM. 10. 16. 



umbella'tum (star of Bethlehem. M. 4), flowers corymbed, peduncles longer 

 than the bracts ; filaments subulate. Naturalized. 6 8 i. 



132. OROBANCHE. 40. 35. 



uniflo'ra (cancer-root. O. b-w. M. 4), stem very short : peduncles 2, elongated, 

 scape-form, 1 flowered, naked : scales smooth, concave : lobes of the corolla 

 oblong-oval, with a pubescent, coloured margin. 4 6 i. 5. 



62. ORYZA. 4. 10. 

 mti'va (rice. ), culm jointed : leaves clasping : panicle terminal. 



211. OSMUNDA. 55. 5. 



cinnamo'mea (flowering fern. O. y. J. 4), barren frond doubly pinnatifid ; seg- 

 ments oval, entire : fertile fronds with opposite racemes, woolly. 3 6 f. <S. 



105. OXALIS. 14. 73. 



acetosel"la (wood-sorrel. O. w. r. M. 4), stemless : scape 1 flowered, longer 

 than the leaves : leaves ternate, broad obcordate, with rounded lobes : styles 

 as long as the inner stamens : root dentate. 



81. OXYCOCCUS. 18. 51. 



macrocar"pus (cranberry. O. r. J. >), creeping: stem ascending; leaves ob- 

 long, flattish, obtuse, becoming white beneath ; pedicels elongated ; divis- 

 ions of the corolla lance-linear. Wet. 



123. P^ONIA. 36.61. 



officina'lis (peony, r. J. 4), leaves decompound ; leafets lobed, lobes broad- 

 lanceolate ; capsules downy. 



52. PANAX. 46. 59. 



quinquefo'lia (ginseng. O. w. M. 4), root fusiform ; leaves ternate, quinate ; 

 leafets oval, acuminate, petioled serrate. Larger than the last. 1 2 f. S. 



32. PANICUM. 4. 10. 



crus-gal"li (barn grass. O. Au. ), racemes alternate and in pairs, compound 

 rachis 5 angled ; glumes terminating in hispid bristles ; sheath glabrous. 

 2 4 f. S. 



121. PAPAVER. 27. 62. 



Exotic. 



somniferum (opium poppy. J. ), calyx and capsule glabrous ; leaves clasp- 

 ing, gashed, glaucous. 



215. PARMELIA. 57. 2. 



, , margin 



incurved, entire, at length pulverulent. On old timber, &c. 



54. PARNASSIA. 14. 64. 



amerlca'na (flowering plantain, w. y. p. Ju. 4), leaves radical (often a leaf on 

 the scape), heart-orbicular, 5 to 9 nerved ; nectaries five, each divided into 3 

 filaments terminated by little spherical heads. Damp or wet. 618 i. 

 155. PASSIFLORA. 34. 97. 



E.rot/C. 



ccp.ru'lea (blue passion-flower, b. Ju. *> ), leaves palmate, 5 parted, entire ; pe- 

 tioles glandular ; involucrum 3 leaved, entire ; threads of the crown shorter 

 than the corolla. 



52. PASTINACA. 45. 60. 



E.rotic. 



sati'va (parsnip, y. Au. S ), leaves simply pinnate ; leafets glabrous. Var. ar- 

 rensis, leafets sub-pubescent. This variety is often found in situations which 

 almost prove it to be indigenous. 



