JSesami 



XCVII. PEDALIXE.E (STAFF). 



551 



Leaf-piargins entire or slightly wavy or repand, 

 very rarely with 1-2 irregular teeth ; capsules 

 usually slender (except in S. rigidum), rarely 

 more than 2 lin. broad. 

 Pedicels very short, at length 1-3 lin. long; 

 stem more or less quadrangular and 

 sulcate. 

 Corolla under 9 lin. long ; capsules not or 

 obscurely beaked. 

 Leaves linear, up to over 2 in. long, 1-2 

 lin. broad ..... 



Leaves lanceolate-oblong, 1-2 in. long, 3-9 

 lin. broad 

 Corolla 1-2 J in. long ; capsules beaked. 

 Corolla under 2 in. long. 



Petioles slender, up to 9 lin. long, 



extrafioral nectaries stipitate. 



Margins of seed drawn out into a 



membranous rim, faces granular . 



Margins of seeds acute; faces radially 



rugose . . . . ; 



Petioles very short or ; extrafioral 

 nectaries sessile. 

 Leaves linear, 3-|- lin. broad. 



Leak of capsule slender, very 



acute; seeds up to J lin. long, 



faces conspicuously rugose 



Beak of capsule broad, often 



obtuse ; seeds 1 lin. long, faces 



faintly rugose 



Leaves lanceolate to linear, G-2 lin. 



broad ..... 



Corolla 2-2 J in. long .... 



Pedicels slender, at length up to 8 lin. long ; 

 stem terete ...... 



Leaves (at least the lowest) often coarsely toothed ; 

 capsules 3|— 4 lin. broad .... 



Lower leaves usually 3-foliolate, upper undivided. 

 The whole plant densely glandular-hairy ; faces 

 of seeds rugose near the margins with a well- 

 defined smooth area in the centre . 

 The whole plant sparingly and finely pubescent ; 

 seeds quite smooth . . 

 Sesaaiopteris. — Plants glabrous (apart from the 

 mucilage glands), or with few microscopic ad- 

 pressed hairs on the youngest parts. Leaves (at 

 least the lower and intermediate) 7-3-foliolate or 

 7-3-partite. Seeds broadly winged (excepting 

 S. ScliencMi), faces muriculate-foveolate. 

 Leaves heteromorphous, the upper undivided. 

 Seeds with an apical and a basal wing 

 Seeds wingless ...... 



All the leaves 5-3-foliolate . - . , . 



3. S. pedalioides. 



4. S. momlaiizense. 



S. antirrhinoides. 

 S. scluiizianum. 



S. august ifolium. 



8. iS. JBaumli. 



S. calgcinum. 

 S. angolense. 



S. rigidum. 

 S. radiatum. 



S. JIarloiMi. 

 S. iiidicum. 



15. S. 



alatum. 



16. S. 



SchenoTcii. 



17. S. 



cqjaense. 



