144 



eiing-persistent, segments cohering at the loweimost base, calyx 

 di^'isions four, Hnear-lanceolate ; petals four, base.broad, ovate-oblong, 

 lance-pointed, biglandular, gibbous on the back ; filaments flattened, 

 subulate, short, the attenuated apex outwardly recurved resuj)inat- 

 ing the anthers ; the expanded base cohering Avith the perianth 

 opposite the calycme segments (or at the sinus of the petals). 

 Anthers introrse, twO|Celled, cells distinct, oblong sagittate or lobed 

 at the base, fixed by the middle. Styles two, contiguous, short, 

 stigmas flattened and shghtly expanded. Capsule sessile, chartaceo- 

 ligneou^ one-celled, two-valved, ovoid-conical, gibbously caiinate. 

 Seeds numerous, flattened, sub-winged, parietal in several series 

 perpendicularly attached or parallel with the valves. 



T. radiatum, (Kellogg.) [Specific name from the remarkable 

 radiations of the pedicels, similar to the rays of an expanded fan.] 

 Fig. 41. 



Stem upright, obtusely quadrangular, slightly pubei-ulent ; from 

 a fusiform rhizoma. 



Radical leaves broadly-lanceolate, striate, nerved, margins sca- 

 brous, narrowed and clasping at base ; cauline leaves narrower, 

 chiefly three to seven-nerved verticillate (by fours) , margins scabrous. 



Bracts merely reduced leaves in whorls of four ; bracteoles at 

 the secondary subdivisions in pairs, from the edges of the rachis ; 

 inflorescence definite, in a terminal somewhat elongated pyramidal 

 raceme-panicle, the superaxillary pedicels opposite, in long fan- 

 shaped radiations of two to four ascending from each angle and 

 more or less cohering together at the base, pedicels one-flowered, 

 two-edged or obcompressed, expanding above, sharply four-angled 

 just beneath the base of the flower, the capsular valves correspond- 

 ing to the two principal scabrous angles, those of the stem or prin- 

 cipal rachis in whorls of four in the subdiiisions opposite. 



Calyx divisions four about ecpial (or alternately a httle longer) 

 linear-lanceolate acute, three-nerved, green (or only slightly colored 

 towards the base), translucent margins somewhat waved, alternate 

 ing with the petals. Petals four, ovate-oblong lance-pointed some- 

 what acuminate, nerved (chiefly three or more), the two large 

 oblong contiguous glands are situatec^ above the broad base, flowers 

 spreading, at length strongly carinate, withering-persistent, in the 

 blooming state pale li\ad 'blue speckled with darker blue, mid-vehi 

 also dark })lue. Filaments glabrous, cohering with the perianth o}> 

 posite the calycine segments — short (about half the length of the 

 petals), flattened-subulate with an expanded three to five-nerved 

 base shghtly inter-connected by a hirsute margin attenuated up- 

 wards to a fine point ; anthers oblong, two-celled, bifid at the base, 

 fixed by the middle, introrse — but apparently cxtrorse by resupina- 

 tion (the base being turned up over, ^. e. uppermost, from the out- 



