2 cm. wide, mostly marginally strigose; flowers produced after the leaves have 

 unfolded; pedicels pubescent and glandular-stipitate; sepals much-abbreviated, 

 pubescent and glandular-stipitate; corolla probably white, about 4 cm. long, the 

 lobes dorsally glandular-stipitate up to or near the apex. 



In bogs, savannahs and low woodlands along streams in s.e. Tex., Mar.-June; 

 apparently endemic. 



In Texas, this species replaces the similarly rhizomatous R. atlanticum (Ashe) 

 Rehd. of eastern United States. It differs markedly, however, from that species. 

 The pedicels, calyx and corolla of R. Coryi are not only adorned with stipitate 

 glands but are also more or less densely pilose while those of R. atlanticum are 

 essentially glabrous and only glandular-stipitate. The style of R. Coryi also is 

 only puberulent or minutely pubescent near its base whereas the style of R. 

 atlanticum is conspicuously long-pubescent in most or all of its lower half. 



As in R. oblongifolium, the flowers in this species develop after the leaves 

 have unfolded, whereas the flowers of R. atlanticum appear before or with the 

 young leaves. There is little besides its rhizomatous habit and small stature to 

 separate R. Coryi from R. oblongifolium. A more realistic treatment might be to 

 consider it as only varietally different from R. oblongifolium. 



2. Rhododendron oblongifolium (Small) Millais. 



Shrub to 25 dm. high; branchlets finely villous to glabrous and more or less 

 reddish-strigose; buds grayish-pubescent; leaves short-petioled, obovate to elliptic 

 or oblanceolate, to 1 dm. long, cuneate or only slightly rounded at base, rounded 

 to acute and mucronate at apex, pubescent beneath to nearly glabrous and some- 

 times glaucescent; pedicels to 15 mm. long, hirsute to subglabrous and glandular- 

 stipitate; flowers white, produced after the leaves are developed; sepals ovate to 

 lanceolate, 1-3 mm. long, glandular; corolla tube usually stoutish, 2-3 cm. long, 

 rather abruptly dilated at the apex, villous and copiously glandular-stipitate on the 

 outside; corolla lobes dorsally glandular-stipitate up to or near the apex; styles 

 white or pink; capsule ellipsoid-conic, 1.5-2 cm. long, blackish and sometimes 

 shiny, profusely adorned with large stipitate glands. Azalea oblongifolia Small. 



In sandy or light soils in boggy or seepage areas, savannah-evergreen shrub 

 bogs, along wooded streams and ravines, and in open low pine and pine-hardwood 

 forests in s.e. Okla. {Waterfall) and e. Tex. and La., Apr .-July or even as late 

 as Sept. 



In our region this species takes the place of the more eastern R. viscosum (L.) 

 Torr. {Azalea viscosa L.) which it closely resembles and under which name our 

 plant has been placed in the past. It is our most widespread and frequent 

 rhododendron, and it also begins flowering a little later than the other species 

 found in our area. The flowers are manifestly viscid or glutinous to the touch. 



3. Rhododendron canescens (Michx.) Sweet. Hoary azalea. Fig. 604. 



Shrub to about 3 m. high, sparingly branched; branchlets canescent-pilose and 

 more or less strigose and sometimes with scattered small glands; leaves mostly ob- 

 lanceolate to narrowly obovate or oblong, subglabrous to grayish-pubescent or 

 tomentose beneath, to 1 1 cm. long, cuneate at base, rounded to subacute and 

 mucronate at apex; flowers produced before or with the leaves, slightly fragrant; 

 pedicels canescent-strigose, rarely sparsely glandular; calyx lobes glandless, 

 canescent; corolla tube slender, 15-23 mm. long, usually pink, abruptly expanded 

 at the apex, about twice as long as the whitish glandless lobes; filaments mostly 

 about 3 times the length of the corolla tubes; style 4-6 cm. long; capsule dark- 

 brown, ellipsoid, about 15 mm. long, villous-setose, nonglandular. Azalea 

 canescens Michx. 



1272 



