IRIS, LATHYRUS. 393 



31. IRIS. 6. 18. 



versic"olor (O. b. J. 4), leaves ensiform : stem acute on one side : capsules ob- 

 long, 3 sided with obtuse angles. 2 3f. <S. 



prismaf'ica (boston iris. E. b. y. J. 4), flowers beardless : leaves linear : stem 

 round, many-flowered ; germs triangular, twice grooved on the sides. 1 2 f. 



Exotic, 

 plica'ta (garden iris. p. w. M. 4), bearded ; stem many flowered, higher than 



the leaves ; petals undulate-plicate, erect ones broadest. 18 24 i. 

 pu'mUa (dwarf-flower-de-luce, b. M. 4), bearded ; scape 1 flowered : leaves 

 ensiform, glabrous ; tube of the corolla exsert ; petals oblong, obtuse. 

 6 10 i. 



ochrole'uca (yellow iris. y. M ) beardless ; leaves ensiform, depressed, striate ; 

 scape sub-terete ; germ 6 cornered. 



131. ISANTHUS. 42. 39. 



cceru'leus (blue gentian, false pennyroyal O. b. Ju. ), viscid-hairy ; leaves, 

 lance-oval, acute at both ends, 3 nerved ; peduncles 1 or 2 flowered. 



31. IXIA. 6. 18. 



chinen"sis (blackberry lily. y. r. J. 4), corolla about 6 petalled ; stem flexuoae ; 

 leaves ensiform. 



21. JASMINUM. 44. 37. 



fruV'icans (jasmine, y. ^ ), leaves alternate, ternate, simple ; leafets obovate, 

 wedge-form, obtuse ; branches angled. 

 officwa'le (jasmine w. ** ), leaves pinnate, opposite ; leafets acuminate. 



1912. JUGLANS. 50. 94. 



cine'rea (butternut. O. M. >), leafets numerous, lanceolate, serrate, rounded at 

 the base, soft-pubescent beneath ; petioles villose ; fruit oblong-ovate, viscid, 

 long-peduncled ; not roughly sculptured. 



61. JUNCUS. 5. 13. 



efu'sus (E. 4), scape minutely striate (soft) ; panicle loose, very branching ; 

 spreading ; leafets of the calyx lanceolate, acuminate, rather longer than the 

 obovate, obtuse capsule. 2 3 f. 



213. JUNGERMANNIA. 57. 3. 



complana'ta, stem branched, creeping ; leaves roundish, very entire ; ears sub- 

 ovate, flattish. On smooth bark ; very rarely on rocks. 



palma'ta, frond short, somewhat ascending, digitate-palmate, nerveless. Dark 

 green. Rotten wood, in wet places. Remark. Most of the Junger-mannias 

 are in fruit late in the spring ; some, however, in the winter. 



101. KALMIA. 18. 50. 

 latifo'lia (laurel. E. w. & r. Ju. > ), leaves long-petioled, scattered, and in threes, 



oval, smooth both sides ; corymbs terminal, with viscid hairs. 3 20 

 angustifo'lia (sheep laurel. O. J. ^), leaves in threes, petioled, oblong, obtuse, 

 sometimes rusty beneath ; corymbs lateral ; bracts linear ; peduncles and 

 calyx with glandular hairs. Var. ovata, taller ; leaves broader, sub-ovate. 

 2 3f. 



171. LACTUCA. 49. 53. 



elonga'ta (wild lettuce. O. y. Ju. $ or 4), leaves smooth ; lower ones runci- 

 nate, amplexicaul ; upper ones lanceolate, sessile ; flowers panicled . 

 46 f. S. 



Exotic. 



sati'va (lettuce, y. Ju. ), leaves roundish ; cauline ones cordate ; stem co- 

 rymbed. Var. romana, has oblong, straight leaves, narrowed at the base. 

 Var. crisp/, has sinuate-crenate leaves, toothed, undulated, crispid ; radical 

 ones hairy on the keel. Var. laciniata, has the lower leaves pinnatifid, and 

 the upper ones runcinate. 



131. LAMIUM. 42. 39. 



umplexicaule (dead-nettle. O. r. Nov. ), floral leaves broadly cordate, sessile, 

 amplexicaul, crenate ; radical leaves petioled. 6 10 in. S. 

 1610. LATHYRUS. 32. 93. 



Exotic. 



odora'tus (sweet pea. J. ), peduncles 2 flowered ; tendril with 2 ovate ob- 

 long leafets ; legumes hirsute. 



