1914] Fernald,— Arenaria ciliata 43 
Masters, in his " Vegetable Teratology,” supplying quite a paragraph 
upon the subject of “ Plurality of embryos in Quercus." 
Since the normal number of ovules in the oak ovary is six, it is not 
so very wonderful that more than one of these should occasionally be 
fertilized and mature into seeds, perfect in all their. parts, though 
abnormal in shape. It does seem odd, however, that such a large 
number of these abnormal fruits should be produced by one or two 
trees at one time. 
MARYLAND AGRICULTURAL COLLEGE, College Park, Maryland. 
THE NORTH AMERICAN REPRESENTATIVE OF ARENARIA 
CILIATA. 
M. L. FERNALD. 
ARENARIA Cylindrocarpa, n. sp., perennis dense vel laxe caespitosa, 
ramis filiformibus humifusis, ramulis adscendentibus 1-15 em. altis 
puberulis remote foliatis 1—4-floris; foliis imbricatis vel remotis 
lanceolatis vel oblanceolatis vel oblongis subacutis glabris carnulosis 
siccis obsolete uninerviis 2-10 mm. longis, axilis haud vel rare fasci- 
culigeris; pedicellis puberulis 2-30 mm. longis; calyce cylindrico basi 
rotundato 3-5 mm. longo fructifero 2-2.5 mm. diametro, sepalis 
oblongis obtusis vel subacutis enerviis vel obsolete uninerviis ad cap- 
sulam arcte adpressis; petalis anguste oblongis 5-7-nerviis calycem 
vix aequantibus; antheris carneis; capsulis cylindricis calycem 
longioribus 4.5-5.5 mm. longis olivaceis vel brunneis; seminibus reni- 
formibus 0.6-0.7 mm. longis brunneis nitidis obsolete rugulosis. 
Perennial, densely or loosely caespitose; branches filiform, forming 
close creeping mats; branchlets ascending, 1-15 cm. high, puberulent, 
remotely leafy, 1—4-flowered: leaves imbricated or remote, lanceolate, 
oblanceolate or oblong, subacute, glabrous, thickish, when dry ob- 
securely 1-nerved, 2-10 mm. long; the axils rarely if ever bearing small 
fascicles: pedicels puberulent, 2-30 mm. long: calyx cylindric, rounded 
at base, 3-5 mm. long, in fruit 2-2.5 mm. in diameter; sepals oblong, 
obtuse or subacute, nerveless or obscurely 1-nerved, closely appressed 
to the capsule: petals narrowly oblong, 5-7-nerved, barely equaling 
the calyx: anthers flesh-colored: capsules cylindric, exceeding the 
calyx, 4.5-5.5 mm. long, olive or brown: seeds reniform, 0.6-0.7 mm. 
long, brown, shining, obscurely rugulose.— 4. ciliata, var. humifusa 
Robinson, Proc. Am. Acad. xxix. 292 (1894) and in Gray, Syn. Fl. i. 
