50 
Austrobaileya 8(1): 47-54 (2009) 
Fig. 1. Duperreya commixta. A. outer sepal at flowering x 5 3 Mitchell 541 (BRI). B. calyx at fruiting x 2, Wilson & 
Rowe 967 (NSW). D. sericea. C. outer sepal at flowering x 5, Corrick 8153 (BRI). D. calyx at fruiting x 2, Wilson & 
Rowe 1178 (NSW). D. halfordii. E. outer sepal at flowering x 5, Benson & Cooper s.n. (BRI [AQ477737]). F. calyx at 
fruiting x 2, Cunningham 520 (NSW). Del. B.Connell. 
Illustrations : Staples (1987: 58, fig. 4), as 
Porana sericea. Staples (2006: 454, fig. 11). 
Perennial; stems climbing, woody at the 
base, moderately dense to densely sericeous, 
becoming ± glabrous with age; bifid hair arms 
0.1-0.3 (-0.7) mm long. Leaf petiole 0.5-2 mm 
long, 0.02-0.06 times as long as the blade; 
blade linear to linear-ovate, 15-65 mm long, 
2-6 mm wide, with a length:breadth ratio of 
6.5-14.5, apex acute to barely obtuse, often 
slightly acuminate, base rounded to obtuse, 
moderately dense to densely sericeous on both 
sides. Peduncle 6-14 mm long; bracteoles 
elliptic, occasionally ovate or obovate, 2.7- 
4.5 mm long, 1-1.5 mm wide, extending to 5 
x 2 mm at fruiting, vestiture as for the leaves. 
Outer sepals broadly ovate to broadly elliptic, 
5-8 mm long, 3-6 mm wide, with a length: 
breadthratio of 1.4-1.6, becoming chartaceous, 
broader to almost orbicular and extending to 
18 mm x 17 mm at fruiting with the length: 
breadth ratio decreasing to 1.1, apex acute 
to obtuse, becoming rounded, mucronulate, 
base obtuse to rounded, moderately densely 
sericeous becoming sparse with age, with 5 
prominent longitudinal veins; inner sepals 
ovate-elliptic to elliptic, 5-7.5 mm long, 
2.8-4 mm wide, with a length:breadth ratio 
of 1.2-1.9, extending to 16 mm x 15 mm at 
fruiting, apex barely acute to obtuse. Corolla 
blue to pale blue, slightly lobed, petals 
8-12 mm long, 7.5-10 mm wide at the rim, 
rounded-emarginate, apiculate at the distal 
end, sparsely hairy on the midpetaline band 
for 4-5 mm. Stamen filaments 3-4.5 mm 
long, fused to the base of the corolla tube for 
0.75-1 mm, glabrous or with an occasional 
low tubercle at the base; anthers 1.5-1.75 mm 
long, 0.75-0.85 mm wide, basal lobes 0.3-0.5 
mm long. Ovary 0.8-1.2 mm high; style 4-5 
mm long. Utricle obovoid to ellipsoid, 3.5-5 
mm long, glabrous, surface wrinkled and 
longitudinally striated; seed 3-4 mm long. 
Fig. 1C, ID. 
Additional selected specimens (34 examined): Western 
Australia. NW of Geraldton, Aug 1967, Ashby 2266 
(AD, BRI, PERTH); Woodleigh Station, E of Perth 
- Carnarvon road, Murchison, Aug 1960, Burbidge 6456 
(BRI, CANB); 12 km N of Murchison River, Oct 1960, 
Byrnes 4028 (BRI, PERTH); Mount Elvire Station, 
Sep 1990, Chapman & Kealley 90-26 (PERTH); near 
Murchison River, c. 5 km upstream of Kalbarri, Sep 
1982, Corrick 8153 (BRI, MEL); Pullagaroo Hill, Nov 
1992, Cranfield 8646A (PERTH); 3 miles [c. 5 km] 
SE of Gravaloo Homestead, Sep 1970, George 10185 
(PERTH); between Kunnunoppin & Mt Marshall & 
Lake Barlee, 1919, per Grasbys.n. (NSW181029); Isseka 
Road East, Northampton, Aug 1999, Shepherd 131 
(PERTH); c. 12 km from Denham along main road to 
Monkey Mia, Aug 1986, Short 2458 (MEL, PERTH); on 
NW Coastal Highway, 32 miles [51.5 km] S of Minilya 
Roadhouse, Sep 1976, Whaite & Whaite 4201A (NSW); 
29.8 km N of Meka Homestead, Sep 1991, Wilson 1172 
& Rowe (NSW, PERTH); 7.5 km N of Murchison Shire 
Office, Sep 1991, Wilson 1178 & Rowe (NSW, PERTH); 
10 km N of Murchison River on NW Coastal Highway, 
Sep 1979, Wilson 2657 (NSW). 
