412 



CXX. SAKTALACE.E (bAKER AND HILL). 



[Thesmm. 



T. Schlechferi. 

 T. megalocarpum. 



3. T. radicans. 



4. T. tohyteamnni- 



scales. Inflorescence a terminal raceme or panicle with cymose branches, 

 sometimes with leafy branches replacing the flowers lu the axils of the- 

 bracteoles. 



Species exceeding 100, two only American, the others inhabiting the temperate 

 regions or mountains of the tropical zone of the Old World. 



All the species here described belong to the section Frisea of this genus, and are 

 distinguished by the tuft of hairs attaching the apex of the ant.hfir-cells to the 

 perianth-lobes. 

 ♦Flowers usually axillary, single or in cymes, each with 

 2 (very rarely 3) bracteoles longer or shorter than 

 the flowers, 

 f Perianth-lobes with an apical beard of hairs. Leaves 

 linear or linear-lanceolate. 

 Leaves densely hispid-pilose or minutely serrulate 

 on the margins. 

 Leaves and stems densely hispid-pilose . 

 Leaves n^inutely serrulate on margins . 

 Leaves glabrous. 



Bracts longer than the flowers ; bracteoles 

 equal to or longer than the flowers. 

 Prostrate herb with creeping rootstock 

 Erect subshrubs or herbs ; stem more or 

 less woody. 

 Peduncles free. 



Flowers single in axils of bracts ; leaves 

 filiform ...... 



Flowers usually in 2-3-flowered cymes ; 

 leaves flattened. 

 Leaves glabrous .... 



Leaves i)apillose .... 



Peduncles adnate partly to the biacts. 

 Plants densely leafy ; leaves narrowly 

 linear. 

 Bi-acteolc3 usually longer than the 

 flowers; perianth about -^ lin. 



long 



Bracteoles about equal in length to the 



flowers ; perianth 1-1^ lin. long. 



Leaves linear, flattened ; beard of 



periantlj-lobes dense 

 Leaves more or less acicular ; beard 

 of periii nth-lobes slight . 

 Plants with scattered leaves. 



Pedicels sliorter than the bracts. 

 Perianth - lobes deeply hooded ; 

 fruits globose wiih faint ribs . 

 Perianth-lobes with a small hood ; 

 fruits ovoid with thick ribs 

 Pedicels elongate, much longer than 

 the bracts ..... 

 Bracts about equal in length to the flowers; 

 bracteoles shorter than the flowers. 

 Flowers arranged singly in bract axils ; 



stems slender . . , . . 13. T. avf/olense^ 



T. Welwitschii. 

 T. hrevibarhalum^ 



7. T. Schweinfurthii, 



8. T. dissitiim^ 



9. T. mukense.. 



10. T. palliolatum, 

 T. gcetzeanum. 

 T. JDinteri. 



11 



12. 



