218 LENTIBl L.\IIIACEAE 



Leaves dichotomously divided, with very short divisions: corolla 4-6 mm. wide: spur a 

 mere protuberance. 2 U minor. 



2. PINGUiCULA (Tourn.) L. Butterwort. 



Lower lip of the corolla about 15 mm. long: base of the corolla conic, ending in a straight 

 filiform cylindric spur. 1 P. macroceras. 



Lower Up of the corolla 10-12 mm. long: base of the corolla ovoid-conic, ending in a 

 tapering, slightly recurved spur. 2. P. rulgaris. 



Family 119. OROBANCHACEAE. Broom-rape Family. 



Flowers subtended bv bractlets. - 1. Myzorrhiza. 



Flowers without bractlets. 2. Thalesia. 



1. MYZORRHIZA Philippi. Broom-rape. 



Flowers all manifestly pedicelled: inflorescence corj-mbose; anthers woolly. 



1. M. corymbnsa. 

 Flowers sessile or nearly so: only the lowest sometimes short-pedicelled : flowers spicate 

 or paniculate. 

 Inflorescence spicate, though sometimes branched: corolla usually purple: stem not 

 bulbose at the base. 

 Corolla 20-2.5 mm. long: anthers woolly. 2. M. multiflora. 



Corolla 15-20 mm. long: anthers glabrous. 3. M. ludoriciana . 



Inflorescence usually a loose elongated panicle; corolla yellow, about 12 mm. long; 

 stem bulbose at the base. 4. M. pinorum 



2. THALESIA Raf. Cancer-root. 



Calyx -lobes subulate, much longer than the tube: stem very short, 1-3-flowered. 



Corolla lilac or pink. 2 cm. or less long; tube 4-5 mm. wide at the throat; lobes oblong, 



acutish or obtuse. 1 T. secli. 



CoroUa deep purple, often with yellowish veins: lobes oval or semi-orbicular, rounded 



Corolla 15-18 mm. long; tube stronglj- curved, 4-5 mm. wide at the throat. 



2. T. minula. 

 Corolla 20-30 mm. long; tube not so strongly curved, 5-8 mm. wide at the throat. 



3. T. purpurea 

 Calyx-lobes lanceolate or triangular, about equalling the tube; stem e\ident, several- 

 flowered. 



Corolla purplish, its lobes roimded or merely mucronate; sepals more or less acumin- 

 ate. " 4. T. fasciculata 

 CoroUa sulphur-yellow, its lobes acute: sepals acute. 5. T. lutea. 



Family 120. MARTYNIACEAE. Uxicorx-plaxt Family. 

 1. MARTYNIA L. Unicorn-plaxt. l. M. Louisiana. 



Family 121. PLANTAGINACEAE. Plaxtaix Family. 



1. PLANTAGO (Tourn.) L. Plantain, PcIbgras-s. 



Flowers all perfect: corolla not closed over the fruit: stamens 4. 



Leaves lanceolate to ovate; neither leaves nor spike silky pubescent or lanate; sta- 

 mens in all the flowers long-exserted 

 Spike cylindrical: seeds not concave on the faces. 



Leaves ovate, abruptlv contracted at the base; seeds more than 2 in each 

 cell. 

 Pyxis dehiscent at the middle, round-ovoid, obtusish: leaves usually thick 



and the dense spike obtuse. 1. P. major. 



Pyxis dehiscent far below the middle, elongate-ovoid, very acute; leaves 

 thin and the lax spike acute. 2. P. asialica. 



Leave? lanceolate, gradually tapering into the petioles; seeds not more than 2 

 in each cell. 

 Leaves thin: plant not woolly at the base. 3. P. Turedyi. 



Leaves thick. 



Plant sparingly pubescent, with red or brown wool at the base. 



4. P. eriopoda. 

 Plant copiously villous with Jointed hairs, not woolly at the base. 



5. P. septnta. 

 Spike short, oblong, 1-3 cm. long: seeds concave on the faces; leaves narrowly 



lanceolate. 0. P. lanccolala. 



Leaves linear; leaves or peduncles or both more or less pubescent with long silky 



hairs; anther in the more fertile flowers included: seeds solitary in each cell, 



concave on the faces. 



Bracts aiistate or herbaceous, at least the lower ones 2-many times as long as 



the flowers 

 Bracts all much exceeding the flowers. 



Plant dark green: spike compact. 7. P. aristata. 



Plant light green; spike more slender. 8. P. spinulosa 



Upper bracts scarcely exceeding the flowers. 9. P. xerodea. 



