3 



S 



creation, aiul tlie majority stand to-daj^ Tliese lie grouped 

 chiefly according to vegetative characters without reference to the 

 perianth, and the first 41 species are set out without reference to 

 the presence or absence of the perianth beard. They are grouped 

 under headings such as ^ spinosa^^ ^ a.villaria,^ ' racemosa,^ 

 ■* spicato,^ and so on. Under his twelfth heading (m) ' imniculata 

 Tiiicranthay' however, he brings iu the qualifying character 

 *rt perigonio undo,' and places under it T. panicidaium (= 7. 

 virgatiany Lam.), T. nigrovioritannnty Sond., T, sqaatro.^iDn^ L.^ 

 jT. corymhuligcrumy Sond., T. ramellosum, Sond., T. lepfocaulc^ 

 Solid., 1\ commutatiim, Sond., and ^^ per 

 T. capitulifloruin, Sond., T. Iiispidulum^ Lam., T. confine^ Sond.^ 

 T. hoffentotfum, Sond., T. tenue, Bernh. {^T, paniculatum, L.), 

 T. dchile^ Spreng., and T. TarifJor^im, Sond. 



In the Prodromust De Candolle retains his sections as set out 

 in the earlier paper, though he modifies considerably his arrange- 

 ment of the section Frisea, which is broken up into two siibsections 

 depending on the presence or absence of a ring of hairs in the 

 throat of the perianth coupled with the presence or absence of a 

 tuft of hairs attaching the antliers to the perianth-segments. In 

 the second section, including the species without the hairs behind 

 the anthers and with the throat ring of hairs, he places 15 species^ 

 seven of which, liowever, do not rightly belong, since they have 

 no throat ring and the antliers are attached. These seven are 2\ 

 jujiceuin, Bernh., 7\ flcvuoswhij A. DC, 2\ pJiijllostachyum ^ 

 Sond., T. Echlonianum^ Sond., T. griaeuui^ Sond., T, magalis- 

 montanum, Sond., and T. rarifloniw, Sond., which belong 

 properly to his first subsection of the section Frisea. 



Since tlie publication of the Prodromus there has been no sys- 

 tematic attempt to revise the Thesiums of the Cape region, 

 although a certain number of new species have been described 

 from time to time. A great deal of material has accumulated, 

 largely owing to ihe activities of Galpin and Schlechtcr, which 

 has necessitated the descripticn of 52 new species. Several 

 species descril)od by Sonder, Avhich were reduced by De Candolle, 



have also been restored, : 



As was observed by De Candolle, a number of well-marked 

 floral types are to be found in the genus. In the majoritv of 

 species the chanicteristic features of the attached anthers obtains. 

 In these cases there is a tuft of hairs behind the anther arising 

 from the face of the perianth-segments or from the tube and 



less adherinn^ to form a rod-like structure which is 



more or - 



attached to tlie upox of tlie anther and serves to keep that org-aii 

 in place a*,'ainst the periantli-segiueiits or wall of the tube. The 

 two newly-constituted sections Imherhia and Baihata iucludo 

 nil the species with attached anthers and correspond in part 

 with De Candolle's sections i, ii, iii, and v §1 and 2. A third 

 section correspondinrr in part to De Candolle's subsection i 

 of his section Fnsca (to which the na me Anniilata is assigned) rs 



♦~E^inmeratIo Sautalacearnm in Afrira. anstrali exh^.fropica cro rta.tinm 

 cjnasDr. Ecklonet C. Zeyber collegerunt, W. bonder lu Floja Inc. 2J,21 Jniic-, 

 1857. pp. ?53-86+. 



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