290 



APPENDIX II. 



MYRTACE/E OF NORTHERN TERRITORY 

 (EXCEPT EUCALYPTUS). 



BY 



EDWIN CHEEL, Botanical Assistak,t, 

 National Herbarium, Sydney. 



DIVISION LEPTOSPERMOIDE^. 



SUB-FAMILY BACKHOUSIIN^. 

 OSBORNIA. 



O. octodonta, F. v. if.— Darwin, G. F. Hill (No. 337), 2/10/14. 

 Sub-Family Metrosiderinse. 



XANTHOSTEMON. 



X. paradoxus, F. v. M. — Darwin, W. Baldwin Spencer, 1913, G. F. Hill 

 (No. 313), 26/7/13 ; lower part of Victoria River, R. J. Winters (No. 10), 

 Aiigu.st, 1913. We have also specimens from Isdell River, W. Kimberlov, 

 ■\V. V. Fitzgerald, June, 1905. 



TRISTANIA. 



T grandiflora, sp., nov. — Syn. T. suaveolens, Sm., var. ? grandiflora, 

 Bentli,B.Fl.,iii.,263. 



I have compared s]pecimens of this species from the Northern Territory with 

 those of T. suaveolens, and find that there is sufficient difference to warrant it 

 being raised to specific rank, as will be seen by the following description : — • 

 Habit of plant not stated. Branches and leaves as well as the inflorescence 

 very hoary, toraentose. Leaves alternate, shortly petiolate, elhptical oblong, 

 or rarely ovate elliptical, obtuse, usually about 1-|^ to 2 inches long, and | to 1 

 inch broad , venation, on the upper side of the leaves plainly visible to the naked 

 eye, but rather obscure on the underside except the midvein. Flowers much 

 larger than those of T. suaveolens, in axillary cymes, usually consisting of three 

 flowers, but the two lateral flowers mostly suppressed, and only the remains of 

 pedicels left, so as to give the inflorescence the appearance of being simple 

 axillary flowers, peduncle -| to 1 inch long. Slightly flattened or biconvex. 

 Ualyx-tube attenuated at the base and more or less ribbed, lobes comparatively 

 large, persistent. Petals nearly orbicular, about 3 lines diameter. Staminal 

 bundles slightly longer than the petals. Fruits undeveloped. This species is 

 intermediate between T. suaveolens, Sm., and T. lactiflua, F. v. M., differing 

 from the former in the smaller leaves which arc much more shortly petiolate, 

 and more hoary-tomentose, and the flowers are not so numerous in the cymes. 

 From T. lactiflua, its nearest ally, it differs in the flf )wers being larger and fc.wer 

 in number, and in Ihc shorter and broader leaves. 



