dongronema.] LXXX. ASCLEPIADE^. 1005 



Pollen-masses solitary in each cell, ovoid, waxy,' erect. Stigma convex, clavate, 

 or conical. Follicles acuminate. Seeds comose. — Glabrous twining shrubs or 

 undershrubs. Leaves opposite. Cymes various, axillary. Flowers small. 



The species are not numerous, and are met with in Asia, Africa, and Australia (Queensland), 

 the latter endemic. 



1. G. micradenia (glands small), Benth. Fl. Austr. iv. 344. A rather 

 slender but tall twiner, minutely but softly pubescent. Leaves obovate-oblong 

 or elliptical, abruptly and shortly acuminate, mostly rounded at the base, 

 becoming glabrous above when full grown, with 2 or 3 minute glands on the 

 upper surface immediately above the petiole, 1 to l^in. long. Umbels small, 

 sometimes shortly developed into cymes, on short interpetiolar peduncles, solitary 

 or rarely opposite and axillary. Calyx-segments ovate, obtuse, not i line long. 

 Corolla-tube broad, as long as the calyx, slightly contracted at the throat but 

 without scales or hairs inside ; lobes short, obtuse. Corona of 5 scarcely 

 prominent small glands or protuberances at the base of the gynostegium. 

 Stigma shortly and obtusely conical. Follicles acuminate, about 1 line long. 



Hab.: Brisbane River, F. v. Mueller ; Ugly Creek, C. Stuart ; Bookhampton, O'Shanesy. 



12. TYLOPHORA, E. Br. 



(Alluding to the swelled pollen-masses.) 



Corolla rotate or nearly so, deeply divided into 5 lobes contorted in the bud, 

 the right-hand edge usually overlapping. Corona of 5 segments, adnate to the 

 back of the anthers, usually prominent and thick or slightly inflated at the base, 

 with short erect adnate or recurved tips. Anthers terminating in a small 

 membrane. Pollen-masses 2 to each anther, small, nearly globular, horizontal 

 or slightly ascending. Stigma short, obtuse or minutely 2-lobed. — Stems erect 

 or more frequently twining. Leaves herbaceous. Flowers in one or more 

 clusters or umbels, along a small or branched interpetiolar peduncle. 



The genus is spread over tropical Asia and Africa and southern Africa, but the Australian 

 species appear to be all endemic. It comes very near to those species of Marsdenia which have 

 rotate corollas, and is most readily distinguished by the small globular pollen-masses. — Benth. 



Stems erect, pubescent. Leaves narrow-lanceolate 1. T. erecta. 



Twiners. 

 Flowers (nearly lin. diameter) solitary or very few in a simple umbel. 



Corona-segments horizontal 2. T. grandiflora. 



Flowers (4 to 5 lines diameter) .in 1, 2 or several umbels. Leaves broad, 

 cordate. Corona-Segments vertical. 

 Calyx hirsute. Corona-segments slightly saccate, not spurred . . 3. T.floribunda. 



Calyx glabrous. Corona-segments spurred at the base i. T. calcarata. 



Flowers (2 to 3 lines diameter) in several umbels orolusterp in a divaricate 



almost filiform cyme. Corolla-lobes tapering into a long linear point . 5. T. paniculata. 

 Flowers (scarcely IJ line diameter) in several umbels, sessile along slender 



simple peduncles .... .... 6. T. flexuosa. 



1. T. erecta (stems erect), F. v. M. Herb.; Benth. FL Austr. iv. 384. 

 Stems erect, simple, 1 to 2ft. high, the whole plant softly tomentose-pubescent 

 or the upper surface of the leaves at length nearly glabrous. Leaves shortly 

 petiolate, lanceolate, rather acute, 8 to 6in. long. Flowers in few clusters or 

 sessile umbels forming a rather compact cyme or in a single umbel on inter- 

 petiolar peduncles shorter than the leaves. Pedicels 2 to 6 lines long. Sepals 

 narrow, acute, above 1 line long. Corolla spreading to about 3 lines diameter. 

 Corona-segments thick fleshy and very prominent, slightly compressed laterally 

 and tapering upwards into an adnate point. Fruit not seen. 



Hab.: Burdekin River, F. v. Mueller; Sellheim and Bowen Rivers, Bowman; Einasleigh 

 River, W. E. Armit. 



