STREBLOCLADIA 147 
1837; Fl. Boliv. 19. pl. 5. f. 2. 1839. Kiitz. Tab. Рћус. 13: 
IO. pl. 27. f. c-f. 1863. 
In beach drift, La Punta, region of Callao, Jan. 25, 1907, 
Coker 30 p.p. and 35 p.p.; from rocks in the surf, Mollendo, Aug. 
1908, Coker 565 p.p. (with immature cystocarps). 
The type was collected at Callao by d'Orbigny. Piccone* 
reports it from Paita as well as from the region of Callao. Speci- 
mens from near Callao, collected by Marcacci, were distributed in 
Hauck & Richter, Phykotheka Universalis, no. 361. 
The plant from San Pedro, California, distributed in Collins, 
Holden, & Setchell, Phycotheca Boreali-Americana (no. 1599) as 
Streblocladia camptoclada has, at least in the Columbia University 
copy, an obviously monopodial structure, and, we believe, does 
not belong in the genus .Streblocladia. 
Streblocladia spicata sp. nov. 
Plants erect, elongate-virgate, wholly ecorticate, 10-20 cm. 
high; main axes (sympodial but superficially and illusively mono- 
podial) simple or 2 or 3 times subdichotomous near the base or 
occasionally above, percurrent, o. 5-0.3 mm. in diameter in basal 
parts, 0.35-0.2 mm. towards the apices, subterete or flattened in a 
4 : 5ratio, showing in section 10-12 pericentral siphons nex bearing 
у disti 
axes) usually 8 ог 9 segments (about 0.8-1.6 mm.) apart, these 
falsely lateral branches mostly 2-10 mm. long, those from near 
the middle of the main axis sometimes 25 mm. long and thence 
diminishing in length towards both apex and base, all (except 
the occasional abortive or once dichotomous) bearing apparently 
2-4 ranks of acuminate or spiniform, often recurved and occa- 
sionally subfalcate-recurved ultimate ramuli 0.25-0.65 mm. long, 
these, in the more vigorous, more or less intermingled with very 
short sympodial axes of the third order; ultimate ramuli showing 
usually 6-9 pericentral siphons, the number decreasing rather 
abruptly at the commonly spiniform, often indurated and brown- 
ish, 1- or 2-celled monosiphonous apex; segments in the upper 
parts 2.5-4 times, in basal parts 3.5-5 times, as broad as long, 
the short pericentral siphons often showing a slight spiral twist 
and in the older parts often becoming somewhat irregular in size 
and position; reproductive parts wanting. [PLATE 56; PLATE 57, 
FIGURES 1-8.) 
* Alg. Vettor Pisani 82. 1886. 
