284 OROBANCHACE^. 



bracts linear-lanceolate and lanceolate, acute: fl. spicate: corolla dull 

 purplish: stamens 4, in very unequal pairs; anthers of the longer 2-celled, 

 of the shorter 1-celled, only the base of the cell ciliolate. Sandy salt 

 marshes from near San Francisco southward. Aug. Nov. 



4. A. mollis (Gray), Greene. Glaucous and villous-hirsute, 11^ ft. 

 high, fastigiately branched: leaves oblong-linear; lower entire, obtuse; 

 upper, and the bracts of the spike, with obtuse teeth or lobes: corolla 

 white and dull-purple: stamens 2; anthers unequally 2-celled: seeds 

 subreniform, with loose cellular-reticulate coat Brackish marshes 

 about Vallejo and Suisun. Aug. Nov. 



20. HELL A HI) I A, Allioni. Stoutish rather rigid erect annual, with 

 densely spicate terminal inflorescence. Calyx campanulate, 4-lobed, the 

 lobes toothed. Corolla strongly bilabiate, the lower and 3-lobed lip 

 equalling or exceeding the galeate upper. Stamens 4, in unequal pairs, 

 enclosed in the concavity of the galea; anther-cells mucronate. Capsule 

 ovate-globose, turgid; the thick placentae bifid. Seeds minute and very 

 numerous, finely costate lengthwise. 



1. B. TRIXAGO (L.), All. Simple or with a few branches, 11 J ft. 

 high: leaves lanceolate, crenate-serrate; the lower somewhat narrowed 

 at base, the upper broader below and subcordate-clasping: spike dense, 

 thick, tetragonal, several inches long: corolla % 1 in. long, rose-color 

 and white. Plentiful in an old field near Martinez, and escaping to the 

 uncultivated slopes adjacent. May. 



21. PEDICULARIS, Tourn. Perennials, with alternate pinnately 

 divided leaves, and flowers in bracted spikes. Calyx irregular, 25- 

 toothed. Corolla strongly bilabiate: upper lip compressed and arched; 

 lower erect at base, 2-crested above, 3-lobed. Stamens 4, enclosed within 

 the galeate upper lip; anthers transverse, equally 2-celled. Capsule 

 ovate or lanceolate, oblique, compressed, loculicidal. Seeds ovoid. 



1. P. densiflora, Benth. Herbage pubescent and dark reddish when 

 young, green and glabrate in age : stem 1 ft. high or less : leaves oblong- 

 lanceolate, 36 in. long, twice pinnatifid or parted, the divisions irreg- 

 ularly and sharply toothed: the upper reduced to bracts of the long 

 dense spike: calyx-teeth 5, lanceolate: corolla narrow, slightly clavate, 

 1 in. long, scarlet or crimson; lower lip only a fourth as long as the 

 upper: anther-cells with tapering or acute base. Eocky hills in some- 

 what shady places. April June. 



ORDER LXXVII. OROBANCHACE/E. 



Plants without green herbage, and parasitic on roots of herbs and 

 shrubs. Floral structure that of Scrophularinese, but capsules with 

 parietal placentae. Seeds very small and numerous. 



