540 SCROPHULARIACE A MELAMPYRUM 
in diameter: capsule orbicular or broader, nearly as broad as the calyx, 
very flat, not oblique. In fields and waste places, Oregon to Alaska and 
across the Continent: Europe and Asia. 
24 MELAMPYRUM L. Sp, 606. 
Annual branching herbs with opposite leaves and small flowers 
solitary in the upper axils, or in terminal spikes. Calyx 4-tooth- 
ed, the 2 upper teeth somewhat longest. Corolla bilabiate, the 
tube narrow, gradually enlarged above, the upper lip compressed, 
obtuse or emarginate, with a groove behind the margins, or these 
recurved, or with a tooth on each side, lower lip spreading or as- 
cending, 3-toothed, 2-grooved beneath. Stamens 4, ascending 
under the galea. Anther-cells distinct, parallel, obtuse or mu- 
cronulate at base. Capsule flat, oblique, loculicidally dehiscent, 
2—4-seeded. Seeds smooth, strophiolate. 
M. lineare Lam. Encycl. iv, 22. Pubescent: stem slender, obscurely 
4-sided above, at length widely branched, 6-18 inches high: leaves lanceo- 
late or linear-lanceolate, short-petioled, acuminate or acute at the apex, 
narrowed, obtuse or the upper truncate at base, 1-244 inches long, the 
lower all entire, the upper floral ones ovate or lanceolate with 2-6 bristle- 
pointed teeth near the base: flowers short-peduncled, 4-6 lines long: calyx» 
about one-third the length of the corolla, its subulate teeth longer than its 
tube: corolla white or whitish, puberulent, the lower lip yellow: capsule 
4-5 lines long, about 2 lines broad, twice as long as the calyx. In dry 
woods, Idaho to Brit. Columbia and east to the Atlantic. 
Orper LXIX. OROBANCHACEZ Lindl. Nat. Syst. ed 2, 287. 
Krect, simple or branched, brown yellowish purplish or 
nearly white, root-parasitic herbs with the leaves reduced to al- 
ternate appressed scales and perfect irregnlar flowers in ter- 
minal bracted spikes, or sometimes solitary or fascicled and 
peduncled in the axils of the scales. Calyx inferior, gamosep- 
alous, 4—5-toothed or 4-5-cleft, or split nearly or quite to the 
base on one or both sides. Corolla gamopetaJous, more or less 
oblique, the tube cylindric, or expanded above, the limb bi- 
labiate and 5-lobed. Stamens 4, didynamous, inserted on the 
tube of the corolla and alternate with its lobes, a fifth rudi- 
mentary one sometimes present. Anthers two-celled, the cells 
parallel and equal. Ovary one-celled, with apparently four 
parietal placentz and numerous, anatropous, ovules. Style 
slender, with two-lobed or four-lobed discoid stigma. Capsule 
one-celled, two-valved. Seeds numerous, reticulated, wrinkled 
or striate. Cotyledons scarcely differentiated. 
* Anther-cells deeply separated from below, mucronate or aristu- 
late at base. 
1 Orobanche Flowers spicate and sessile or subsessile. 
2 Thalesia Flowers pedunculate, without bracts on the peduncle or calyx. 
* * Anther-cells parallel and muticose at base. 
3 Boschniakia Flowers sessile in a dense simple scaly-bracted spike. 
