R.S. Cowan & B.R. Maslin, Acacia Miscellany -- 1 
189 
Etymology. The name is intended to call attention to the distinct secondary nerve reticulum in 
A. cassicula (a little net). 
3. Acacia consobrina Cowan & Maslin, sp. nov. (Figure 1, G-I) 
Frutex humilis 0.5- 1.3 m altus, 2-3.5 m patens, ramulis plus minusve compressis, villosis, 
interdum appresso-pilosis, pilosis vel uncinalo-pilosis. Slipulae persistentes, 1.5-4 mm longae, 
triangulares ad subulatac, villosae vel solum ciliolatae. Phyllodia anguste oblanccolata vel 
oblongo-oblanceolata, complanata, plcrumque rotundalo-oblusa el excentrice mucronulala, pulvino 
0.5-1. 5 mm Iongo, villoso, lamina 27-38 mm longa, 4-9 mm lata, coriacca, inclinala ad palenti, 
parce falcata vel recta, plcrumque villosa sed aliquando uncinato-pilosa vel suberectc villosa, 3- vel 
4-nervata per superficiem, nervis secondariis plus minusve parallclis, anastomosantibus, glandc 
inconspicua, usque 5 mm supra pulvinam. Racemorum axes ad 4.5 mm sub anthesi, rare apparenter 
deficiens, pilosulosi, bractcis basalibus ovatis, aculis ad acuminatis, 1.5-4 mm longis, plus minusve 
villosulosis. Pedunculi binati, 2-6 mm longi, rare ad 10 mm longi, puberuli ad pilosi, interdum pilis 
appressis. Capitula globularia, 4-6 mm diametro, (27)-36-47-lloribus, bracteolis ovatis ad 
lanceolatis, aculis ad acuminatis, stipitatis, ciliatis. Flores 5-mcri. Sepala petalis plus minusve 
1/4- 1/2 breviora, discreta ad 1/3-connata, ligulata vel oblanceolalo-ligulata. Petala 
angusto-elliptica, discreta. Ovarium granulosum vel ad apieem papillatum ad appresso-puberulum 
saltern. Legumen oblongum, supra semincs valdc elevatum, 12-30 mm longum, 6-8 mm latum, 
inter semines valde plicalum, tenuitcr coriaccum, villosum vel pilosum. Semina obliqua, lato-ovata 
vel rotundato ad oblongo-ovalia, 2.5-3 mm longa, 2-2.5 mm lata, nitide atro-brunnea, 
pleurogramma distincta, circa 1.5 mm longa, arillo subapicali. 
Typus: 15 miles [24 km] N of Ongcrup, Western Australia, 21 June 1964, K.R. Newbey 395 D 
(holo: PERTH; iso: BRI, CANB, K, NSW, NY). 
Low, spreading shrubs 0.5-1. 3 m tall, spreading 2-3.5 m. Branchleis ± compressed, villose, 
occasionally appressed-pilosc, pilose or uncinate-pilose. Stipules persistent, 1.5-4 mm long, 
triangular to subulate, villose or at least ciliolatc. Phyllodes narrowly oblanceolate or 
oblong-oblanceolate, apex generally rounded and cxccntrically mucronulaie, pulvinus 0.5-1. 5 mm 
long, villose, blades 27-38 mm long, 4-9 mm wide, coriaceous, inclined to patent, slightly falcate or 
straight, usually villose but sometimes uncinate-pilose or subappressed pilose, each face with 3 or 4 
distant, longitudinal main nerves, secondary nerves nearly as prominent, forming many 
anastomoses more or less parallel to main nerves. Gland inconspicuous, situated on upper margin 
of phyllode to 5 mm above pulvinus. Racemes axillary, (l-)2-hcaded, axes to 4.5 mm long at 
anthesis, rarely apparently lacking, pilosulosc; basal peduncular bract ovate, acute to acuminate, 
1.5-4 mm long, more or less villosulosc. Peduncles 2-6 mm long, rarely to 10 mm, puberulous to 
pilose, occasionally hairs appressed. Flower-heads globular, 4-6 mm diam., (27-)36-47-flowered. 
Bracteoles ovate to lanceolate, acute to acuminate, stipitatc, cilialc. Flowers 5-mcrous. Sepals 
1/2-3/4 length of petals, free to 1/3-united, ligulate or oblanccolate-ligulatc. Petals narrowly 
elliptic, free. Ovary granulose, papillate or appressed puberulous, at least apically. Legumes 
oblong, 12-30 mm long, 6-8 mm wide, sLrongly plicate, folded between seeds, thin-coriaceous, 
villose or pilose. Seeds oblique, broadly ovate or round to oblong-oval, 2.5-3 mm long, 2-2.5 mm 
wide, glossy dark brown, plcurogram U-shaped, c. 1.5 mm long; aril subapical. 
Selected specimens examined. WESTERN AUSTRALIA: on Borden water-catchment just S of 
Borden townsite, 34° 05’ S, 1 1 8° 1 5’ E, K. Bradby 44 (PERTH); Swan River Colony, ./. Drummond 
5:13 (PERTH); 12 km S of Highway 1 on Monkey Rock Road, E of Jcrramungup, G. Crait> 1671 
(CANB, K, PERTH); 6 miles [9.6 kmj N of Nyabing, V.F. McDougall 1 (PERTH); 15 miles [24 
km] N of Ongerup, K.R. Newbey 395 (PERTH) and 395D (l'rt) (CANB, PERTH); 1 mile [ 1 .6 kmj E 
of Lake Grace, K.R. Newbey 1760 (B, BM, G, MO, PERTH); 29 miles [46.6 km[ SE of Ongerup, 
K.R. Newbey 3382 (AD, BRI, PERTH, W); 1.6 km N of Chillilup Pool, Pallinup River 
K.R. Newbey 3389 (CANB, K, MEL, PERTH); Kalgarin [Karlgarin], April 1968, II G Rue sn’ 
(PERTH 00185752); Nembudding district, E.M. Williams (PERTH 931829). 
