LABIATE. 285 



1. APHYLLOJf, Mitchell. Ours low viscid-pubescent plants, usually 

 with peduncled flowers. Calyx regular, 5-cleft or -parted. Corolla 

 more or less tubular and curved and not very strongly bilabiate. Sta- 

 mens not exserted: anther-cells deeply separated from below upward, 

 mucronate at base. Each valve of the capsule bearing a pair of contig- 

 uous placentae. 



* JScapiform peduncles from a short crown or stem. 



1. A. uniflorum (L.), Gray. var. occidental. Scapes few, often 1 

 only, slender, 1 — 5 in. high, from an almost subterranean short crown: 

 lobes of the calyx subulate, longer than the tube: corolla %—% in. long, 

 deep blue-purple. — Wooded stony hills. April. 



2. A. fasciculatnm (Nutt.), Gray. Scaly fleshy stem rising several 

 inches above ground, bearing few or many fascicled peduncles as long as 

 the stem: calyx-lobes broader and shorter than in the last: corolla more 

 than 1 in. long, sulphur-yellow, with reddish or purplish tints on the 

 outside. — Sandy or gravelly hills. May. 



* * Inflorescence racemose or thyrsoid. 



3. A. comosum (Hook.), Gray. Branching at or near the surface of 

 the ground: fl. on slender pedicels in a corymb or short raceme: calyx 

 6-parted, the lobes long and slender: corolla 1 in. long, rose-color or 

 purplish; upper lip 2-lobed or notched; lower 3-parled: anthers woolly.— 

 Open hills; parasitic on Artemisia. June. 



4. A. tuberosum, Gray. Low, stout, minutely puberulent, the 

 thickened base of the stem with imbricated scales: fl. in a dense thyrsoid 

 cluster: calyx unequally cleft, little shorter than the corolla; this with 

 short sea cely spreading lobes: anthers glabrous. — Mt. Hamilton. July. 



Oedbk lxxviii. L A B I A T JE . 



Herbs (and a few shrubs) mostly keenly aromatic, with quadrangular 

 stems, opposite simple exstipulate leaves and axillary solitary or cymose- 

 congested flowers; but the inflorescence often more terminal and spicate 

 or racemose. Calyx 3— 5-toothed or cleft, regular or bilabiate. Corolla 

 usually strongly bilabiate; upper lip entire or 2-lobed; lower 3-cleft or 

 -parted. Stamens 2 or 4. Ovary 3-lobed, each lobe becoming a seed- 

 like nutlet in the bottom of the persistent calyx. Seed erect from the 

 base of the nutlet, usually exalbuminous. 



* Calyx and coroUa both nearly regular. 



Stamens 4, long-exserted, curved Tkichostema 1 



" 4, short, nearly equal Mentha 2 



" 2 only Lyoopds 3 



