119 Outer integument lobation (0) unlobed
, (1) lobed.
It gathers the species of Alycaulini whose adults have four or three-segmented palpi and fully fused, unlobed
female cerci, pupae with a non-brittle exoskeleton, and larva with the spatula usually well-developed, three or four lateral papillae on each side of the spatula and usually 6 or 8 terminal papillae, and convex and unlobed
terminal segment (Gagne, 1994).
On older trees, the leaves are generally 5-15 cm long, unlobed
, cordate at the base and rounded to acuminate at the tip, and serrated on the margins.
The P quadrangularis is well known species of series Quadrangulares because of its winged, angled stems and possesses large, unlobed
leaves with entire margin.
The trophosome is an unlobed
organ showing organizational similarities to the trophosomes of juvenile vestimentiferans.
5-6): cerci elliptical; hypoproct wider than aedeagus, deeply bilobed, each lobe with 1 apical and 2-3 subapical setae, entire surface setulose; aedeagus cylindrical, slightly recurved dorsally, rounded apically, subequal in length to hypoproct and cerci, with several sensilla; gonocoxite cylindrical, unlobed
; gonostylus terete, wide throughout length to apical tooth, with setae evenly dispersed, longest laterally, entire surface setulose.
Unfortunately, the diagnostic posterior end of the worm was unavailable, but the worm was similar in color (reddish brown), relative thickness, and overall appearance to a female horsehair worm with an unlobed
posterior discovered entwined with an elongate egg mass on the previous day in the Strawberry River at Highway 289, Izard County, Arkansas.
Many people do not recognize it at maturity because the leaves become unlobed
(entire) and the plant easily supports itself for upright growth.
Sterile leaf blades simple, unlobed
; veins rejoining after branching (netted); fertile stalk with unbranched sporangial clusters Ophioglossum
In contrast, the adult plant is bush-like with unlobed
, heart-shaped leaves.
The first true leaves are unlobed
, whereas those at successive nodes become increasingly more lobed until the shoot begins to flower (which occurs at the fourth node).